(QENG-1134) Remove 'jvm-puppet' references left in Beaker.

Recently the `jvm-puppet` name was changed to `puppet-server`, this patch
addresses that in both `lib/` and `spec/`

Signed-off-by: Wayne <wayne@puppetlabs.com>
Merge pull request #438 from waynr/fix/qeng-1134-remove-jvm-puppet-references

(QENG-1134) Remove 'jvm-puppet' references left in Beaker.