Correcting spacing on older releases

The older releases in the CHANGELOG do not follow the same spacing
rules.  Simply cleaning this up.  Should also have '.' at the end of
sentences.

Change-Id: I14f990476e969b77f3ea0a2b85eaab24eca3834c
Added functionality to return list of rabbit hosts

In the process of adding this functionality, refactored the way search
occurs, so we can use a genericized method.
  * Added `#rabbit_servers` method, which returns a list of rabbit servers.
  * The `#memcached_servers` method no longer accepts an environment.
  * Re-factored methods which search to a generic `#search_for`.
  * Updated the tests which were modified to the new rspec expect syntax.

Change-Id: Ifb4dd793f47a6b7529c5fa9e65895d1bcab8f7b3
Merge "Added functionality to return list of rabbit hosts"
rename memcached_servers attribute for consistency

Change-Id: I7fec53ae18f38a0cd86f84a101a7bd5d5230fafd