(pup-1636) Add a rhel7 config
(pup-1636) Add firewall service name for rhel7
(pup-1636) Skip enc test on RHEL7

Skip this test on RHEL7 for the same reason it's being skipped
on RHEL6 (and other platforms). Note this is a test for a deprecated
feature which has proven challenging to setup across a range of
platforms.
Merge pull request #2344 from kylog/issue/pup-1636/add-rhel7-to-acceptance

Issue/pup 1636/add rhel7 to acceptance