This started to fail due to a missing || : / --force option now
that the dependencies got fixed:
2017-07-30 19:38:37.260 | ++ tools/install_prereqs.sh:source:97 : sudo rpm -e --nodeps python-cffi python-cryptography python-pyOpenSSL
2017-07-30 19:38:37.293 | error: package python-cffi is not installed
2017-07-30 19:38:37.293 | error: package python-cryptography is not installed
2017-07-30 19:38:37.293 | error: package python-pyOpenSSL is not installed
Change-Id: Ia59afb7ee564cf2044ebdb3c5ad3e54ee91d1222