This update for yast2, yast2-packager provides the following fixes:

Changes in yast2:
- Include the package in the INSTALLER repository to be upgraded during installation.
- No source changes

Changes in yast2-packager:
- Avoid error when generating some warnings. (bsc#1148536)
- Always set proper release version for newly added repositories. (bsc#1132748)

This update was imported from the SUSE:SLE-15-SP1:Update update project.