Removed standard function each

Function 'each' requires parser=future which we don't want to use

This patch replaces the class include with a custom function binding the
classes. This is the same approach as hiera_include which we used before
adding the Scenes layer.

Also changed quickstack::scene for more clarity in the output.
fix checking for version

Now truly supports 6.4+.  Includes a fix for RHEL 7+, RHEL 6.10+
Merge pull request #426 from gildub/scenes+no_future_parser

Removed standard function each
Merge pull request #429 from mburns72h/version-support

fix checking for version
BZ #1172366 - fix some pcmk constraints

https://bugzilla.redhat.com/show_bug.cgi?id=1172366

Constraints with an incorrect name specified (i.e., no -clone) could
cause issues for pcs commands immediately following.  Also remove
groups for cloned resources.
Merge pull request #428 from cwolferh/fix_some_pcmk_constraints

BZ #1172366 - fix some pcmk constraints