1029057 - override sha with sha1 in order to support yum modifyrepo command.
Update doc block for clarity
Merge pull request #384 from pulp/barnabycourt-1029057

1029057 - Override sha to sha1 for modifyrepo command support
Merge branch 'pulp-2.3'
Automatic commit of package [pulp-rpm] release [2.3.0-0.33.beta].
Merge (-s ours) pulp-2.3 => master, post-build
Fix unit test break
Fix checksum error
Merge pull request #385 from pulp/barnabycourt-fix-unit-test-break

Fix unit test break
Merge branch 'pulp-2.3'
Automatic commit of package [pulp-rpm] release [2.3.0-0.34.beta].
Merge (-s ours) pulp-2.3 => master, post-build
Automatic commit of package [pulp-rpm] release [2.3.0-0.35.beta].
Merge (-s ours) pulp-2.3 => master, post-build
Automatic commit of package [pulp-rpm] release [2.3.0-0.36.beta].
Merge (-s ours) pulp-2.3 => master, post-build
Merge branch 'master' into jconnor-new-yum-distributor