Rearrange helper to run tests standalone

Also correct package names and selinux on rhel7
Merge pull request #116 from hunner/patch_rhel7

Rearrange helper to run tests standalone
CentOS 5 gets haproxy from epel
Merge pull request #117 from hunner/patch_cent5

CentOS 5 gets haproxy from epel
The spec helper should only run on supported platforms
Merge pull request #118 from hunner/patch_helper

The spec helper should only run on supported platforms
Change include to include?