Implement volume quota support in Cinder

parital fix for bug 1023311
  * To use needs cinderclient https://review.openstack.org/#/c/11509/
  * Updates quota classes with changes in Nova
  * Adds needed quota related DB tables
  * Updates test_quota to reflect changes in Nova
  * Adds absolute limits and empty rate limit functions
  * Updates test/integration/test_volume to make it work w/ above changes

Change-Id: I221c7a9dc51a2bb9bf7228c056f63ba9546cf5f9

cinder/exception.py

@@ -295,10 +295,23 @@ class HostBinaryNotFound(NotFound):
     message = _("Could not find binary %(binary)s on host %(host)s.")
 
 
+class InvalidReservationExpiration(Invalid):
+    message = _("Invalid reservation expiration %(expire)s.")
+
+
+class InvalidQuotaValue(Invalid):
+    message = _("Change would make usage less than 0 for the following "
+                "resources: %(unders)s")
+
+
 class QuotaNotFound(NotFound):
     message = _("Quota could not be found")
 
 
+class QuotaResourceUnknown(QuotaNotFound):
+    message = _("Unknown quota resources %(unknown)s.")
+
+
 class ProjectQuotaNotFound(QuotaNotFound):
     message = _("Quota for project %(project_id)s could not be found.")
 
@@ -307,6 +320,18 @@ class QuotaClassNotFound(QuotaNotFound):
     message = _("Quota class %(class_name)s could not be found.")
 
 
+class QuotaUsageNotFound(QuotaNotFound):
+    message = _("Quota usage for project %(project_id)s could not be found.")
+
+
+class ReservationNotFound(QuotaNotFound):
+    message = _("Quota reservation %(uuid)s could not be found.")
+
+
+class OverQuota(CinderException):
+    message = _("Quota exceeded for resources: %(overs)s")
+
+
 class MigrationNotFound(NotFound):
     message = _("Migration %(migration_id)s could not be found.")
 
@@ -372,6 +397,18 @@ class QuotaError(CinderException):
     safe = True
 
 
+class VolumeSizeExceedsAvailableQuota(QuotaError):
+    message = _("Requested volume exceeds allowed volume size quota")
+
+
+class VolumeSizeExceedsQuota(QuotaError):
+    message = _("Maximum volume size exceeded")
+
+
+class VolumeLimitExceeded(QuotaError):
+    message = _("Maximum number of volumes allowed (%(allowed)d) exceeded")
+
+
 class DuplicateSfVolumeNames(Duplicate):
     message = _("Detected more than one volume with name %(vol_name)s")