Report create_share_from_snapshot_support

Set create_share_from_snapshot_support as True in order to
be able to create share from snapshot.

This fixes all Dell EMC drivers issue like below:
  Share cannot be created from snapshot

Change-Id: If43d9b15b21a2ae74c6872726e9e537501697405
Closes-Bug: #1652911

manila/share/drivers/dell_emc/driver.py

@@ -140,7 +140,9 @@ class EMCShareDriver(driver.ShareDriver):
         data = dict(
             share_backend_name=backend_name,
             vendor_name='Dell EMC',
-            storage_protocol='NFS_CIFS')
+            storage_protocol='NFS_CIFS',
+            snapshot_support=True,
+            create_share_from_snapshot_support=True)
         self.plugin.update_share_stats(data)
         super(EMCShareDriver, self)._update_share_stats(data)
 

manila/tests/share/drivers/dell_emc/test_driver.py

@@ -128,6 +128,8 @@ class EMCShareFrameworkTestCase(test.TestCase):
         data['replication_domain'] = None
         data['filter_function'] = None
         data['goodness_function'] = None
+        data['snapshot_support'] = True
+        data['create_share_from_snapshot_support'] = True
         self.assertEqual(data, self.driver._stats)
 
     def _fake_safe_get(self, value):