Added plexus-slf4j-logging as dependency to fix test failure in MetadataToolsTest.
Added plexus-slf4j-logging as dependency to fix test failure in MetadataToolsTest.

git-svn-id: f25645bd54002203a47bb62c0b0afba5efd98acb@570085 13f79535-47bb-0310-9956-ffa450edef68

ricardojbasilio/archiva,apache/archiva,sadlil/archiva,emsouza/archiva,emsouza/archiva,apache/archiva,Altiscale/archiva,Altiscale/archiva,Altiscale/archiva,flomotlik/archiva,sadlil/archiva,ricardojbasilio/archiva,olamy/archiva,apache/archiva,ricardojbasilio/archiva,flomotlik/archiva,Altiscale/archiva,sadlil/archiva,apache/archiva,olamy/archiva,emsouza/archiva,olamy/archiva,sadlil/archiva,ricardojbasilio/archiva,olamy/archiva,flomotlik/archiva,emsouza/archiva,flomotlik/archiva,apache/archiva,sadlil/archiva