Revision 1135978

[MRM-1411] project information is missing if a POM could not be read correctly
o proxy parent POM if not found in the repo when building the effective POM when creating metadata (also applied the same in dependency tree builder)
o added unit tests
o moved out wagonfactory classes into separate module so it can be used by maven2-repository w/o depending on archiva-proxy module (as it inroduces cyclic dependency)