Change default ceph_osd_docker_memory_limit from 1g to 3g in tripleo call to ceph-ansible

[John Fulton]

ceph-ansible's ceph_osd_docker_memory_limit is used when starting an OSD container as follows:

`docker run ... --memory $ceph_osd_docker_memory_limit ... $osd_container_name`

The minimum recommendation is a baseline of 16GB of RAM per OSD host, with an additional 2 GB of RAM per daemon, though 3 GB is the most common. This is a request to set the default to 3 GB.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/531495

[John Fulton (jfulton-org)]

This will be addressed in ceph-ansible directly:

 https://github.com/ceph/ceph-ansible/pull/2304

The https://review.openstack.org/531495 patch will now just update CI to use lower defaults for the smaller environment.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/531495
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=d68619a26ec7cbd6176f4bb0d352d2aa91439f5c
Submitter: Zuul
Branch: master

commit d68619a26ec7cbd6176f4bb0d352d2aa91439f5c
Author: John Fulton <email address hidden>
Date: Fri Jan 5 15:26:22 2018 -0500

    Update Ceph container CPU/memory limits in Ceph scenarios

    Ceph containers are started with `docker run --memory`
    and `docker run --cpus` to limit their memory and CPU
    resources. The defaults for OSD and MDS containers were
    recently increased [1] to values better for production
    but this change keeps them at lower values just for
    CI.

    [1] https://github.com/ceph/ceph-ansible/pull/2304

    Change-Id: I5b5cf5cc52907af092bea5e162d4b577ee05c23a
    Related-Bug: 1741499

[John Fulton (jfulton-org)]

- The ceph-ansible defaults change has merged (https://github.com/ceph/ceph-ansible/pull/2304)
- Only TripleO CI will continue to use the smaller values
- Closing this bug

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: stable/pike
Review: https://review.openstack.org/533380

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/533380
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=fa02a8f8633b682ba2042ac7fb26d76453cfe65a
Submitter: Zuul
Branch: stable/pike

commit fa02a8f8633b682ba2042ac7fb26d76453cfe65a
Author: John Fulton <email address hidden>
Date: Fri Jan 5 15:26:22 2018 -0500

    Align stars to fix stable/pike gate on scenario001

    1) Fix path for iscsi config file

    We changed the bind mount to be /etc/iscsi in
    I838427ccae06cfe1be72939c4bcc2978f7dc36a8, we need to copy the files to
    /etc/iscsi so that they do not end up at '/' in the container.

    Change-Id: Id5c1f16d08ffd36a35a6669d64460a7b2240d401
    Closes-Bug: #1741850
    (cherry picked from commit 8eb351d588539c20caf768c2633832a924f40690)

    2) Fix puppet config volume for iscsid in containers

    Bind mount the /etc/iscsi host path for iscsi container puppet config.
    Use the real host path /etc/iscsi for containers dependsing on it.

    Closes-bug: #1735425

    Change-Id: I838427ccae06cfe1be72939c4bcc2978f7dc36a8
    Co-authored-by: Alan Bishop <email address hidden>
    Co-authored-by: Martin André <email address hidden>
    Signed-off-by: Bogdan Dobrelya <email address hidden>
    (cherry picked from commit 82f128f15b1b1eb7bf6ac7df0c6d01e5619309eb)

    3) Allow to override manage polling param

    Without this, we cannot override the polling yaml metrics
    from puppet template.

    Change-Id: I509dd4932402c458e222c52b5d7d5e370a5466c0
    (cherry picked from commit e870783b2c8f3b7b13459693b17425f5bf0fe53d)

    4) Disable voting on scenario001 - now timeouting to ssh the VM created
       by Tempest.

    Related-Bug: 1742936

    5) Update Ceph container CPU/memory limits in Ceph scenarios

    Ceph containers are started with `docker run --memory`
    and `docker run --cpus` to limit their memory and CPU
    resources. The defaults for OSD and MDS containers were
    recently increased [1] to values better for production
    but this change keeps them at lower values just for
    CI.

    [1] https://github.com/ceph/ceph-ansible/pull/2304

    Change-Id: I5b5cf5cc52907af092bea5e162d4b577ee05c23a
    Related-Bug: 1741499
    (cherry picked from commit d68619a26ec7cbd6176f4bb0d352d2aa91439f5c)