Merge pull request #354 from tkolhar/master

Added test for ID : 259835
did some reordering of rests, added comments with bugs, fixed failing
ones
system name in previous call needs to be the same:

my fault: actually test_rhsm_ForceReg uses that exact system name in order to make called (and assert) that system gets unregistered first.

hope this commit helps.

thanks Tazim for finding this out.
remove dependency from test_rhsm_ForceReg
Merge remote-tracking branch 'upstream/master'
moved consuming package group content test into new class
Merge pull request #359 from hhovsepy/master

refactorings, some fixes and comments