Add new exception handler stage to Walrus REST pipleines for constructing S3 style error responses.
Fix Walrus REST authentication to not bail on unimplemented S3 APIs.
Change Walrus REST binding to throw precise errors for unimplemented S3 operations.

Fixes EUCA-7626
Fix Mule inbound endpoint leak - EUCA-7810

MuleClient is extended to override the default endpoint access to avoid
leaking an endpoint per request sent.

The eucalyptus service mule configuration is updated to add a
synchronous endpoint for VM transport (internal). The creation of a new
synchronous endpoint was previously hiding this issue.

EUCA-7810
Merge remote-tracking branch 'origin/dev/sjones/EUCA-7810' into testing
Merge remote-tracking branch 'shaon/testing' into testing
changed default user to eucalyptus. Fixes EUCA-7890.
made euca_user configurable. Fixes EUCA-7891.
workaround for nasty --initialize behavior. Fixes EUCA-7892.
Update INSTALL doc
--keys defaults to false. Fixes EUCA-7903.
Merge branch 'testing' of git.eucalyptus-systems.com:eucalyptus into testing
make sure keys backup exists (Fix EUCA-7941).
Revert "EUCA-7667 Add eucalyptus-backup-restore to Makefile"

This reverts commit cf17d9ace5f97ef839a669fde4c6aa83b31f08b0.
remove check to fail when iptables delete rules for DNAT/SNAT pub/priv mapping rules fail (or are redundant)