Add more unit tests, increasing overall coverage
- Add tests for fedoraResponse class
- Clean up camel exceptions

Partial resolution of: https://www.pivotaltracker.com/story/show/82225792
Add fcrepo-metrics test dependency.

This should not be necessary, but the dependency loading in Jenkins
  indicates that fcrepo-metrics is not always loaded in time.
http://jenkins.fcrepo.org/job/fcrepo-camel/org.fcrepo.camel$fcrepo-camel/21/testReport/junit/org.fcrepo.camel.integration/FedoraFileIT/testFile/
Merge pull request #16 from awoods/metrics-dependency

Add fcrepo-metrics test dependency.
Merge remote-tracking branch 'upstream/master'