Bug fixes and cleanup for ansible-test. (#45991)

* Remove unused imports.
* Clean up ConfigParser usage in ansible-test.
* Fix bare except statements in ansible-test.
* Miscellaneous cleanup from PyCharm inspections.
* Enable pylint no-self-use for ansible-test.
* Remove obsolete pylint ignores for Python 3.7.
* Fix shellcheck issuers under newer shellcheck.
* Use newer path for ansible-test.
* Fix issues in code-smell tests.

test/runner/lib/cloud/cs.py

@@ -17,6 +17,7 @@ from lib.util import (
     display,
     SubprocessError,
     is_shippable,
+    ConfigParser,
 )
 
 from lib.http import (
@@ -34,13 +35,6 @@ from lib.docker_util import (
     get_docker_container_id,
 )
 
-try:
-    # noinspection PyPep8Naming
-    import ConfigParser as configparser
-except ImportError:
-    # noinspection PyUnresolvedReferences
-    import configparser
-
 
 class CsCloudProvider(CloudProvider):
     """CloudStack cloud provider plugin. Sets up cloud resources before delegation."""
@@ -119,7 +113,7 @@ class CsCloudProvider(CloudProvider):
 
     def _setup_static(self):
         """Configure CloudStack tests for use with static configuration."""
-        parser = configparser.RawConfigParser()
+        parser = ConfigParser()
         parser.read(self.config_static_path)
 
         self.endpoint = parser.get('cloudstack', 'endpoint')
@@ -211,7 +205,7 @@ class CsCloudProvider(CloudProvider):
             containers = bridge['Containers']
             container = [containers[container] for container in containers if containers[container]['Name'] == self.DOCKER_SIMULATOR_NAME][0]
             return re.sub(r'/[0-9]+$', '', container['IPv4Address'])
-        except:
+        except Exception:
             display.error('Failed to process the following docker network inspect output:\n%s' %
                           json.dumps(networks, indent=4, sort_keys=True))
             raise