
Implements blueprint per-user-quotas. Based on the original quotas structure. NOTE: quota_instances, quota_cores, quota_ram, quota_volumes, quota_gigabytes, quota_key_pairs and quota_security_groups are supported per user. Allow 'projectadmin' role to access the user quota setting methods. Add commands 'nova-manage quota project/user' for quotas management. Change-Id: I07a39499432571fedd819c53ae414240cefc3354