Allow configurable port for Eucaops.

Change-Id: I411c6820f1a8ad77538782a8c12ff88b8133f80e
Merge branch 'testing' of git.qa1.eucalyptus-systems.com:qa-repos/eutester into testing
Provide error message instead of concat err when credpath is None
Merge pull request #276 from bigschwan/temp

QA merge, add error message when credpath is not provided during parse