The python3/python3-pyyaml packages both are never installed and dnf
itself never updated when $DIB_DISTRIBUTION_MIRROR set and used.
This change fix the order of the operations:
1. yum/dnf configure.
2. *.repo patching.
3. yum/dnf update/install execution.
Change-Id: Ifbbf1f0190fe8c8a77fb3be820e8056447e755f6
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>