Cloudera-Manager distro

 Adding a variation of cloudera install which includes cloudera manager. All
    cluster set-up and configuration are done via CM.

 Rename our cloudera module (to cdh) to not clash with standard module name.
    (Scoping works, but package resources are seen as dups.)
    For now, we are keeping traf::cdh as a non-CM install for existing nodes.

 Extract hive metastore database set-up into it's own module as it is common
    to all distros. ::cloudera module is supposed to set up metastore, but it seems
    to use same database type as as the cloudera manager uses. Cloudera
    reccommends mysql for metastore, not embedded. So we have to set it up
    separately. Also blank password for hive is default but does not seem to work.

 Set-up has been tested only with CM5 and CDH4.4. Hooks are in place for CDH5.1,
    but cmgr.sh script needs to be tested there.

 Adding Trafodion installer to test process is next step. The only thing
    added so far is the tinstall user with the right sudo and ssh privileges needed.

 Blueprint: infra-test-installation

Change-Id: Id2a72b84b8a3d3eebca4ed19406b35247b247706