1081865 - updating location element in the repomd file to include href a...

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https://bugzilla.redhat.com/show_bug.cgi?id=1081865

It seems that the location element in repomd.xml which is supposed to contain href attribute with location as the value was not done correctly in the new distributor -  
eg. expected value is 
<location href="repodata/filelists.xml.gz"/>
as opposed to 
<location>repodata/filelists.xml.gz</location>