Change alarm client name and tenant name

Refactor to use correct client for alarms and project_name instead of
tenant_name

Also should test for aodh service being available instead of alarming,
as ceilometer no longer handles alarming.

Change-Id: I3aeedcb0277c8565b7935b77a2313c63319e92ff
Closes-Bug: #1567832
2 files changed