fixes to initiate, complete, abort in Walrus. Fixes to proxy response.
fixes to Walrus to correctly accept POST, fixes for multipart bindings, fixes to correctly add outbound headers, updates to set grants obtained from manifest.
fixes to partinfo entity, GC cleaned up parts correctly, fixes to set etag so that it do not resemble a hash (for getobject), fixes to get from parts.
fixes delete object to handle multipart for Walrus.
merge testing.
Multiple fixes to MPU including fixes to set the correct object uuid, bucket uuid for lookup and part upload on the backend.

Fix to criteria to look up parent part.
Merge branch 'team/storage/mpu' of git.eucalyptus-systems.com:eucalyptus into testing