rpm unit filesystem upgrades; also added some test data for filesystem upgrades tests
include srpms as part of rpm upgrade, no reason to treat them differently
Distribution file upgrades
drpm filesystem upgrade to content dir
Merge branch 'jdob-v1-upgrade' into prad-v1-upgrades
cleanup debug statements
Adding some doc strings for clarity
fix the upgrades to move the content instead of copy; fix unit tests to take backup of test data
add some error handling around moves
Merge branch 'jdob-v1-upgrade' into prad-v1-upgrades
verify report status
clean up unused calls
clean up tests
Merge branch 'jdob-v1-upgrade' into prad-v1-upgrades
fix minor issues from PR comments
Merge pull request #256 from pulp/prad-v1-upgrades

filesystem content upgrades for rpms, drpms and distributions