<oo-admin-check-sources> make executable
Fix condition where repo_priority is run against missing repo
Merge pull request #135 from dobbymoodge/check-sources-bugs

Fix condition where repo_priority is run against missing repo
<oo-admin-check-sources.py> Fix redundant priorities advice

Cache priorities fixes in `resolved_repos` so `--report-all` gives
reasonable output. It was repeating the priorities setting advices for
the base RHEL channel and warning about repo priorities >= 99 after it
advised to set the same repos to a lower priority
Merge pull request #136 from dobbymoodge/check-sources-bugs

<oo-admin-check-sources.py> Fix redundant priorities advice
<check-sources> Add rhscl repo priority checking

Added entries in `repo_db.py` for rhscl RHN and RHSM repos, massaged
logic for priority and conflict checks to put RHSCL repos at same
level priority as OSE repos
Merge pull request #137 from dobbymoodge/check-sources

<check-sources> Add rhscl repo priority checking