Comment 10 for bug 1485505

Reproduced on 7.0-301 + MU1
Steps:
1) Deploy env with detach db+keystone (3 ctrls, 4 db+keystone)
2) Delete 1 db+keystone node
3) Deploy changes
4) Run 'hiera memcache_roles' on one of controllers

Result: the value wasn't updated after node deletion. (I will add logs later)
https://product-ci.infra.mirantis.net/job/7.0.system_test.ubuntu.plugins.thread_keystone_separate_services/16/testReport/%28root%29/separate_keystone_service_add_delete_node/separate_keystone_service_add_delete_node/

Snapshot https://product-ci.infra.mirantis.net/job/7.0.system_test.ubuntu.plugins.thread_keystone_separate_services/16/artifact/logs/fail_error_separate_keystone_service_add_delete_node-fuel-snapshot-2015-11-12_05-56-54.tar.xz.filtered.log