use global 'region' attr
Use new get_mysql_endpoint method in osops-utils

Start converting various cookbooks to use the new #get_mysql_endpoint method
which now allows people to point to a non-chef managed mysql server for all
things.

See rcbops/chef-cookbooks#597
move sysfsutils to cinder_volume_packages as systool is needed for boot-from-volume even without nfs netapp
Update VERSION
Merge remote-tracking branch 'dangerzone/v4.2.1rc' into v4.2.1rc