packaging: sync miniyum with otopi

queryLocalCache is not actually needed, was left over from legacy
upgrade. Yum standard query provides the same functionality.

Disable parallel fetch so we can monitor progress.

Support plugin enable/disable so in future we will be able to check for
engine update without touching the versionlock file.

Change-Id: Ife4f8b5fe4c683b936c00d233bf18ad7d377f07a
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>