Merge pull request #258 from pulp/rbarlow-test_common_models_calculates

Test the new calculate_{size,checksum}() methods in common.models.
976333 - Updated the relative URL calculation to use the new key for
feed
976333 - Fixed importer config look up to use constant
Merge pull request #259 from pulp/jdob-976333

976333 - Updated the relative URL calculation to use the new key for
Merge pull request #254 from pulp/rbarlow-test_iso_cli_contents

Add unit tests for the pulp_rpm.extension.admin.iso.contents module.
Merge branch 'rbarlow-test_extension_admin_iso_upload' into pulp-2.2
Merge branch 'pulp-2.2' of ssh://github.com/pulp/pulp_rpm into pulp-2.2
Merge branch 'pulp-2.2', pre-build.