(QE-189) Puppet Acceptance needs to be able to handle rhel4
- skips epel installation on rhel4
- skips package installation on rhel4
- increased timeout for vcloud dns resolution
remove references to 'redhat', our naming is standardized on el-*
Merge pull request #1 from anodelman/rhel4

(QE-189) Puppet Acceptance needs to be able to handle rhel4