Bump required ems-version to one that we have forked and changed. Also add more tests.
The forked ems is located at https://github.com/rhq-project/ems
Remove the accidentally introduced sub-module reference.
Merge pull request #20 from pilhuhn/bz_1033553_new-ems-version

[BZ 1033553] Bump required ems-version to one that we have forked and changed.