Various Puppet lint fixes

* Fixes following warnings:
    * indentation of => is not properly aligned
    * string containing only a variable
* Fixes following errors:
    * tab character found
    * two-space soft tabs not used
* Remove quotes around class in include/require statements

Change-Id: I7e17d9153d413792e32f9d7c430dfbd37852ba51
Merge "Various Puppet lint fixes"