Install Cloudera Search.
Canonicalize all include statements.
Merge branch 'feature/separate_search' into develop
Switch all tests to use cm_server_host => localhost.
Install Cloudera GPL Extras (LZO).
Integrate GPL Extras with Class['cloudera'].

Integrate Class['cloudera::gplextras'] with Class['cloudera'].
Add $use_gplextras parameter to allow choice.

LZO compression is not a default installation requirement, so allow
people to turn it on to gain the compression library benefits.
Merge branch 'feature/gplextras' into develop