Added HEAD object test
Merge pull request #297 from euca-nightfury/maint/4.0/testing

Added HEAD object test
Adds presigned url tests for each verb and for sts tokens

Conflicts:
	testcases/cloud_user/s3/object_tests.py
Adds S3 POST upload test using STS credentials
Merge branch 'query_auth_4.0' of https://github.com/zhill/eutester into zhill-query_auth_4.0

Conflicts:
	testcases/cloud_user/s3/object_tests.py
Merge branch 'zhill-query_auth_4.0' into maint/4.0/testing
Merge branch 'maint/4.0/testing' into testing