Merge branch 'release/2.0.16' into develop
Update links to pkgdb2.
Merge pull request #86 from fedora-infra/feature/pkgdb2-link

Update links to pkgdb2.
Protocol agnosticism.  Fixes #79.
Fix logic.
Merge pull request #90 from fedora-infra/feature/ssl

Protocol agnosticism.
Merge pull request #91 from fedora-infra/feature/pkgdb2-fix

Fix logic.
2.0.17
Merge branch 'release/2.0.17'
2.0.17