Removed files and references for loading of old groovy-based configs. Fixes EUCA-7727

Removes loadConfig calls for SC and Walrus "storageprops.groovy" and "walrusprops.groovy"
Deletes those groovy files as well.
Merge branch 'dev/zhill/EUCA-7727' into testing
Merge branch 'testing' of git.eucalyptus-systems.com:eucalyptus into testing