Add multipath-tools to kvm hosts

[Bjoern]

In order to support iscsi multipath for nova, the package multipath-tools should be installed by default

[Bjoern (bjoern-t)]

https://review.openstack.org/256082

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/257104

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/256082
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=232048e385da038c364615f52fc1bada6a52a48f
Submitter: Jenkins
Branch: master

commit 232048e385da038c364615f52fc1bada6a52a48f
Author: Bjoern Teipel <email address hidden>
Date: Thu Dec 10 14:08:41 2015 -0600

    Adding multipath-tools package for nova hosts

    This fix adds the multipath-tools package to all nova
    nodes in order to support iscsi-multipath inside nova.

    In order to enable this feature in nova the following override
    needs to be configured:

    nova_nova_conf_overrides:
      libvirt:
        iscsi_use_multipath: true

    DocImpact
    Closes-Bug: #1524957

    Change-Id: I36da282043ce864c8a1fb69a1ee02e3a273c14e4

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: liberty
Review: https://review.openstack.org/257425

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: kilo
Review: https://review.openstack.org/257434

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/257104
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-openstack_hosts/commit/?id=0dfe5375342d07f156e9c22b426f9f7eca091124
Submitter: Jenkins
Branch: master

commit 0dfe5375342d07f156e9c22b426f9f7eca091124
Author: Bjoern Teipel <email address hidden>
Date: Sun Dec 13 21:32:18 2015 -0600

    Increasing max AIO kernel limit

    When using multipath, the stock AIO limit per process is
    to low and needs to be increased to at least 128k
    This fix will increase the fs.aio-max-nr to 128k

    Change-Id: Id6d8d2cb103483f75ba7b9c7b1022ebca4f143ea
    Related-Bug: #1524957

[OpenStack Infra (hudson-openstack)]

Change abandoned by Jesse Pretorius (<email address hidden>) on branch: kilo
Review: https://review.openstack.org/265948
Reason: This was a mistaken review.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/257434
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=e0aa94f6cad4264c9a39ae5ac063c76c4810ce32
Submitter: Jenkins
Branch: kilo

commit e0aa94f6cad4264c9a39ae5ac063c76c4810ce32
Author: Bjoern Teipel <email address hidden>
Date: Mon Dec 14 09:01:06 2015 -0600

    Enable multipath usage on all OpenStack hosts

    This fix adds the multipath-tools package to all nova
    nodes in order to support iscsi-multipath inside nova.
    Additionally when using multipath, the stock AIO limit
    per process (fs.aio-max-nr) is too low and needs to be
    increased to at least 128k.

    In order to enable this feature in nova the following override
    needs to be configured:

    nova_nova_conf_overrides:
      libvirt:
          iscsi_use_multipath: true

    This is a backport combining two patches:
     - https://review.openstack.org/256082
     - https://review.openstack.org/257104

    DocImpact
    Closes-Bug: #1524957
    Change-Id: I36da282043ce864c8a1fb69a1ee02e3a273c14e4

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/257425
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=8b0bae21cd660d65bd87509849c4cedfeb9fd7be
Submitter: Jenkins
Branch: liberty

commit 8b0bae21cd660d65bd87509849c4cedfeb9fd7be
Author: Bjoern Teipel <email address hidden>
Date: Mon Dec 14 09:01:06 2015 -0600

    Enable multipath usage on all OpenStack hosts

    This fix adds the multipath-tools package to all nova
    nodes in order to support iscsi-multipath inside nova.
    Additionally when using multipath, the stock AIO limit
    per process (fs.aio-max-nr) is too low and needs to be
    increased to at least 128k.

    In order to enable this feature in nova the following override
    needs to be configured:

    nova_nova_conf_overrides:
      libvirt:
          iscsi_use_multipath: true

    This is a backport combining two patches:
     - https://review.openstack.org/256082
     - https://review.openstack.org/257104

    DocImpact
    Closes-Bug: #1524957
    Change-Id: I36da282043ce864c8a1fb69a1ee02e3a273c14e4

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/openstack-ansible 11.2.11 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/openstack-ansible 12.0.8 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/openstack-ansible 11.2.12 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/openstack-ansible 12.0.9 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/openstack-ansible 13.0.0 release.

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/openstack-ansible 13.0.0 release.

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/openstack-ansible 12.0.11 release.

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/openstack-ansible 11.2.14 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/openstack-ansible 11.2.15 release.