[trivial] fix several minor issues

This cleanup fixes a handful of items identified as not
blocking a larger patchset.

Change-Id: I4642112c444c546c0bb271ed58a2d9b76155cad7

src/bin/shipyard_airflow/shipyard_airflow/common/deployment_group/deployment_group_manager.py

@@ -25,6 +25,7 @@ from .deployment_group import DeploymentGroup
 from .deployment_group import Stage
 from .errors import DeploymentGroupCycleError
 from .errors import DeploymentGroupStageError
+from .errors import DeploymentGroupSuccessProcessingError
 from .errors import UnknownDeploymentGroupError
 from .errors import UnknownNodeError
 
@@ -122,6 +123,12 @@ class DeploymentGroupManager:
             LOG.info("Group %s has met its success criteria and is "
                      "now set to stage %s", group_name, stage)
             return True
+        # Any other cases are invalid.
+        raise DeploymentGroupSuccessProcessingError(
+            "Group {} has no failures, but is in an invalid state {}".format(
+                group_name, stage
+            )
+        )
 
     def report_group_summary(self):
         """Reports the status of all groups handled by this deployment"""

src/bin/shipyard_airflow/shipyard_airflow/common/deployment_group/errors.py

@@ -56,6 +56,15 @@ class DeploymentGroupStageError(Exception):
     pass
 
 
+class DeploymentGroupSuccessProcessingError(Exception):
+    """DeploymentGroupSuccessProcessingError
+
+    Raised when success processing has been provided with an invalid scenario
+    to validate
+    """
+    pass
+
+
 class UnknownDeploymentGroupError(Exception):
     """UnknownDeploymentGroupError
 

src/bin/shipyard_airflow/shipyard_airflow/control/validators/validate_deployment_configuration.py

@@ -48,7 +48,7 @@ class ValidateDeploymentConfiguration(DocumentValidator):
                 error=False,
                 level="Info",
                 message=("A deployment strategy document was not specified in "
-                         "the deployment configuration. Beacuse of this, the "
+                         "the deployment configuration. Because of this, the "
                          "strategy used will be all-at-once.")
             ))
             LOG.info("No deployment strategy document specified, "

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_base_operator.py

@@ -281,7 +281,6 @@ class DrydockBaseOperator(UcpBaseOperator):
         try:
             return self.drydock_client.get_task(task_id=task_id)
         except errors.ClientError as client_error:
-            # Dump logs from Drydock pods
             raise DrydockClientUseFailureException(client_error)
 
     def task_failure(self, _task_failure):

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_nodes.py

@@ -189,7 +189,7 @@ class DrydockNodesOperator(DrydockBaseOperator):
         """Execute the Drydock task requested
 
         :param task_name: 'prepare_nodes', 'deploy_nodes'
-        ;param interval: The time between checking status on the task
+        :param interval: The time between checking status on the task
         :param timeout: The total time allowed for the task
 
         Wraps the query_task method in the base class, capturing