Pacemaker has wrong configuration on a controller after deletion other controllers from HA cluster

[Dennis Dmitriev]

Scenario:
    1) Create HA cluster (Ubuntu/Centos) : 3 controllers, 1 compute;
    2) Deploy cluster;
    3) Check that OSTF passed successfully, `pcs status` example: http://paste.openstack.org/show/213411/;
    4) Delete any two controllers from the cluster via Nailgun API/UI/CLI
    5) Run OSTF , check `pcs status` on the remaining controller

Expected resuld: OSTF passed on step 5; `pcs status` shows that DC has a quorum and there are running VIPs and other resources.

Actual result: `pcs status` on the remaining controller shows that the controller has no quorum (example: http://paste.openstack.org/show/213412/):
"Current DC: node-1.test.domain.local (1) - partition WITHOUT quorum"

, and it is waiting for other controllers that have been deleted:
Online: [ node-1.test.domain.local ]
OFFLINE: [ node-2.test.domain.local node-3.test.domain.local ]

As the result: cluster is in the non-operational state because pacemaker stopped all resources on the remaining controller.

Pacemaker should be re-configured after controller deletion.

[Dennis Dmitriev (ddmitriev)]

ISO version: {"build_id": "2015-04-29_07-55-19", "build_number": "361", "release_versions": {"2014.2.2-6.1": {"VERSION": {"build_id": "2015-04-29_07-55-19", "build_number": "361", "api": "1.0", "fuel-library_sha": "0e5b82d24853304befb22145ac4aaf3545d295e1", "nailgun_sha": "e660b1c09d7d4d07bdd48d424ce9aed3b6facd6e", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "8cd6cf575d3c101dee1032abb6877dfa8487e077", "astute_sha": "04ebab96d57b0e8acbf2d7f3ba05e4fbf31b741e", "fuel-ostf_sha": "b38602c841deaa03ddffc95c02f319360462cbe3", "release": "6.1", "fuelmain_sha": "ee112acfdd0f9017ef40be53e8e51bb5c429e97c"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "0e5b82d24853304befb22145ac4aaf3545d295e1", "nailgun_sha": "e660b1c09d7d4d07bdd48d424ce9aed3b6facd6e", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "8cd6cf575d3c101dee1032abb6877dfa8487e077", "astute_sha": "04ebab96d57b0e8acbf2d7f3ba05e4fbf31b741e", "fuel-ostf_sha": "b38602c841deaa03ddffc95c02f319360462cbe3", "release": "6.1", "fuelmain_sha": "ee112acfdd0f9017ef40be53e8e51bb5c429e97c"}