Support for pacemaker-1.3 RNG schema

pacemaker supported pacemaker-1.3.rng, so follow it.

FYI:
https://github.com/ClusterLabs/pacemaker/commit/041ba953e284fea1752dec1c9544bb270515c227

```
$ cibadmin -Q
<cib epoch="2" num_updates="10" admin_epoch="0" validate-with="pacemaker-1.3" crm_feature_set="3.0.9"  ...snip...

# crm configure show
crm configure show
ERROR: CIB not supported: validator 'pacemaker-1.3', release '3.0.9'
ERROR: You may try the upgrade command
ERROR: No CIB!
ERROR: configure.show: CIB is not valid
```