[READINESS] Add missing python modules to docker image

With the new base image the requirements.txt is not loaded,
therefor it has to be added into the dockerfile

Issue-ID: OOM-3280

Change-Id: I00cdf1f60ae2e07d6b0fc7246798f2d241d17471
Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>
2 files changed