Pre-dnf yum-builddep leaves a stale yum.pid file behind with its own
process ID. If that PID happens to be reused and match an existing
process, a subsequent yum & co invocation hangs.
Solution: create a wrapper script that deletes the pid file if
necessary.
Change-Id: I821643f576645d78ab1c29cdccefa12740bbc12f
Closes-Bug: 1920805
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>