#000 - Fix RSpec spec. Had removed fixture used by it.
Merge pull request #397 from arvindsv/fix_warnings

#000 - Fix RSpec spec. Had removed fixture used by it.
#403 disabled dtd download by default
#403 SystemEnvironemnt is now passed to XmlArtifactImporter, using inavlid domain for non existant dtd for test
Merge pull request #405 from pshivana/issue_403

#403 disabled dtd download by default
#403 injecting SystemEnvironment to StageResourceImporter constructor used by tests
Merge pull request #407 from pshivana/master

#403 injecting SystemEnvironment to StageResourceImporter all constructors