Modified ceilometer alarm evaluator console script

Take account of the modification to the alarm evaluator
console script naming in the following commit:

  https://github.com/openstack/ceilometer/commit/bad5f18e

Change-Id: Ic7fc3b8ad7be9dd2a5b5ed3c07e169691229bb4d
print out git references for trees

in order to be sure we understand the environment that's running
in an upstream test, print out the git information for the tree.
This will hopefully address questions of "which commit of tempest"
is being used for particular tests.

Change-Id: Ief4e8a17fd75945f02982d2adf8625fe927d823d
Merge "Modified ceilometer alarm evaluator console script"
Merge branch 'master' of github.com:openstack-dev/devstack