Merging fix from mesa-1.6.1 [1/1]

Merging fix for "Stop messing with networks we did not create" from mesa-1.6

See https://github.com/crowbar/barclamp-quantum/pull/86


 .../cookbooks/quantum/recipes/post_install_conf.rb |   65 ++++++--------------
 1 file changed, 19 insertions(+), 46 deletions(-)

Crowbar-Pull-ID: 39731fee332c561b9b3af24306d9ea8d566bbe9c

Crowbar-Release: roxy