Fix typos in Barbican files

TrivialFix

Change-Id: I1b49864443d90e0f81f794c82c4ce00ce9078e33

barbican/model/migration/commands.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """
-Interace to the Alembic migration process and environment.
+Interface to the Alembic migration process and environment.
 
 Concepts in this file are based on Quantum's Alembic approach.
 

barbican/model/models.py

@@ -836,7 +836,7 @@ class TransportKey(BASE, SoftDeleteMixIn, ModelBase):
     transport_key = sa.Column(sa.Text, nullable=False)
 
     def __init__(self, plugin_name, transport_key):
-        """Creates transport key entity ."""
+        """Creates transport key entity."""
         super(TransportKey, self).__init__()
 
         msg = u._("Must supply non-None {0} argument for TransportKey entry.")
@@ -883,7 +883,7 @@ class CertificateAuthority(BASE, ModelBase):
     )
 
     def __init__(self, parsed_ca_in):
-        """Creates certificate authority entity ."""
+        """Creates certificate authority entity."""
         super(CertificateAuthority, self).__init__()
 
         msg = u._("Must supply Non-None {0} argument "

barbican/plugin/interface/certificate_manager.py

@@ -459,7 +459,7 @@ class CertificatePluginBase(object):
         """Deletes a subordinate CA
 
         Like the create_ca call, this should only be made if the plugin
-        returns Ture for supports_create_ca()
+        returns True for supports_create_ca()
 
         :param ca_id: id for the CA as specified by the plugin
         :return: None