Ansible templating of swift.conf breaks swift-recon on a multi-region deployment

[git-harry]

What is the expected behaviour?

swift.conf should match throughout the environment. swift-recon --md5 should pass without errors.

What is actually happening?

ansible template in adding "# Ansible managed:" at the top thus causing:

`(swift-12.0.13)root@XXXXX-swiftproxy001_swift_proxy_container-ACBDEFG:~# swift-recon --md5
===============================================================================
--> Starting reconnaissance on 42 hosts
===============================================================================
[2016-06-02 09:29:58] Checking ring md5sums
42/42 hosts matched, 0 error[s] while checking hosts.
===============================================================================
[2016-06-02 09:29:58] Checking swift.conf md5sum
!! http://172.28.244.107:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.100:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.114:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.116:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.106:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.115:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.104:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.110:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.117:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.105:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.103:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.111:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.118:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.109:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.102:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.112:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.119:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.120:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.108:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.101:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
!! http://172.28.244.113:6000/recon/swiftconfmd5 (c1e92abe9bef64173049c0ea87267898) doesn't match on disk md5sum
21/42 hosts matched, 0 error[s] while checking hosts.
==============================================================================
How can we reproduce this issue?

Install multi-region Swift and run 'swift-recon --md5'.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/326369

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: liberty
Review: https://review.openstack.org/326374

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/326369
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_swift/commit/?id=2dc3514da59eaaf683166cb30ef9ab2a9bc83363
Submitter: Jenkins
Branch: master

commit 2dc3514da59eaaf683166cb30ef9ab2a9bc83363
Author: Darren Birkett <email address hidden>
Date: Tue Jun 7 11:31:46 2016 +0100

    Make ansible managed line in swift.conf static

    The ansible-managed line includes date/time information, meaning that
    the conf file that gets laid down on different hosts does not have the
    same MD5 sum across all hosts. This causes swift-recon --md5 to fail.

    This commit fixes the issue by adding a static comment
    to the config file instead

    Change-Id: Id00cd79636f43776aaaa51e2ae6d7c5eacff8d34
    Partial-Bug: #1589532

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/328393

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/328393
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_swift/commit/?id=fb102b51dae7fe75822314ec8ed8c8fde52c008a
Submitter: Jenkins
Branch: stable/mitaka

commit fb102b51dae7fe75822314ec8ed8c8fde52c008a
Author: Darren Birkett <email address hidden>
Date: Tue Jun 7 11:31:46 2016 +0100

    Make ansible managed line in swift.conf static

    The ansible-managed line includes date/time information, meaning that
    the conf file that gets laid down on different hosts does not have the
    same MD5 sum across all hosts. This causes swift-recon --md5 to fail.

    This commit fixes the issue by adding a static comment
    to the config file instead

    Change-Id: Id00cd79636f43776aaaa51e2ae6d7c5eacff8d34
    Partial-Bug: #1589532
    (cherry picked from commit 2dc3514da59eaaf683166cb30ef9ab2a9bc83363)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/326374
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=b3777c507b602ca9d44728e169e58e4811dda9bf
Submitter: Jenkins
Branch: liberty

commit b3777c507b602ca9d44728e169e58e4811dda9bf
Author: Darren Birkett <email address hidden>
Date: Tue Jun 7 11:38:18 2016 +0100

    Make ansible managed line in swift.conf static

    The ansible-managed line includes date/time information, meaning that
    the conf file that gets laid down on different hosts does not have the
    same MD5 sum across all hosts. This causes swift-recon --md5 to fail.

    This commit fixes the issue by adding a static comment
    to the config file instead

    Change-Id: Id00cd79636f43776aaaa51e2ae6d7c5eacff8d34
    Partial-Bug: #1589532

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: kilo
Review: https://review.openstack.org/332011

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/332011
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=6df4ba80861b59198383dce932204f63d22c639e
Submitter: Jenkins
Branch: kilo

commit 6df4ba80861b59198383dce932204f63d22c639e
Author: Darren Birkett <email address hidden>
Date: Tue Jun 7 11:38:18 2016 +0100

    Make ansible managed line in swift.conf static

    The ansible-managed line includes date/time information, meaning that
    the conf file that gets laid down on different hosts does not have the
    same MD5 sum across all hosts. This causes swift-recon --md5 to fail.

    This commit fixes the issue by adding a static comment
    to the config file instead

    Change-Id: Id00cd79636f43776aaaa51e2ae6d7c5eacff8d34
    Partial-Bug: #1589532
    (cherry picked from commit b3777c507b602ca9d44728e169e58e4811dda9bf)