Merge pull request #9 from gildub/packstack/icehouse

max_connections default to 1024
Fixes Facts string comparisons in CentOS 7

CentOS Project has adopted a new rule for versioning numbers. The major number
matches the RHEL major number, but the minor number is generated from the
release date. For example, CentOS 7.1407.

Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>