OOZIE-1146 FileSystem used by prepare sections should use the configuration of the action (rohini via virag)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1471616 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-307-trunk-gd