Fix os version test
Fix os version test

On RHEL7 we see:
Error: Could not find resource 'Service[pcsd]' for relationship from 'File[etc-pacemaker-authkey]' on node overcloud-controller-2.localdomain

I think a small typo slipped into: 56a11120019d "Update os variables"

 if (versioncmp($::os['release']['major'], '7.0') < 0) {

should be

 if (versioncmp($::os['release']['full'], '7.0') < 0) {

Otherwise the first if is always true and we end up with pcsd_mode =
false which is why we get the error 'Error: Could not find resource
'Service[pcsd]' for relationship from 'File[etc-pacemaker-authkey]'

Tested this and I correctly get past the errors on rhel7.

Change-Id: I7e7f6bc378b3c0f3f3f6e286a09bc8339d3ce70e
Closes-Bug: #1869586

openstack/puppet-pacemaker,openstack/puppet-pacemaker,openstack/puppet-pacemaker,openstack/puppet-pacemaker