Merge pull request #201 from coryb/testing

add metrics for the provision scripts
update release to 2.1.53-dev
Merge pull request #202 from coryb/testing

fix #PR201
update release to 2.1.54-dev
Merge pull request #203 from coryb/testing

fix EXDEV error when backing up provision files
update release to 2.1.55-dev
add requirements for rpm build
Merge pull request #206 from ImmobilienScout24/upstream

add requirements for rpm build
pin pylint to version that works
if --enhanced-networking used set sriov_net_support=simple for registered image
add --enhanced-networking option