install task creates wrong meta data file

[bpappin]

This may not be an issue, but appears to be.

the android grade build looks for maven-metadata.xml file when resolving dependencies, however the install task of the this plugin creates maven-metadata-local.xml.
Its not entirely clear, but it looks like gradle does not check for that file.

I discovered this related to ticket #50 where the artifact always has a classifier, causing an expected dependency to fail resolution.