cm-api usability enhancement:
* Moved some top level cm api code out of cm-server.rb and into new class called cmApiClient.
  This allows me to run/debug the cm api code without chef server/client involved and even from
  the Eclipse IDE on my windows desktop if so desired.
* Final change to make the Cloudera Manager deploy client config API call more reliable.
* Cleaned up some old test scripts in the unit test directory which were no longer needed.
removed old test scripts - no longer needed.
Merge pull request #188 from Paul-Webster/pull-req-release-hadoop-2.4-master-7d4720cb5eac724c7278d317cde78a6a14a66e18

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