More strict pylint checking of ansible-test code.

test/lib/ansible_test/_util/controller/sanity/pylint/config/ansible-test-target.cfg

@@ -3,14 +3,11 @@
 disable=
     cyclic-import,  # consistent results require running with --jobs 1 and testing all files
     duplicate-code,  # consistent results require running with --jobs 1 and testing all files
-    import-error,  # inconsistent results which depend on the availability of imports
     import-outside-toplevel,  # common pattern in ansible related code
-    no-name-in-module,  # inconsistent results which depend on the availability of imports
     no-self-use,
     raise-missing-from,  # Python 2.x does not support raise from
     super-with-arguments,  # Python 2.x does not support super without arguments
     too-few-public-methods,
-    too-many-ancestors,  # inconsistent results between python 3.6 and 3.7+
     too-many-arguments,
     too-many-branches,
     too-many-instance-attributes,
@@ -50,3 +47,8 @@ function-rgx=[a-z_][a-z0-9_]{1,40}$
 
 preferred-modules =
     distutils.version:ansible.module_utils.compat.version,
+
+# These modules are used by ansible-test, but will not be present in the virtual environment running pylint.
+# Listing them here makes it possible to enable the import-error check.
+ignored-modules =
+    py,

test/lib/ansible_test/_util/controller/sanity/pylint/config/ansible-test.cfg

@@ -3,9 +3,7 @@
 disable=
     cyclic-import,  # consistent results require running with --jobs 1 and testing all files
     duplicate-code,  # consistent results require running with --jobs 1 and testing all files
-    import-error,  # inconsistent results which depend on the availability of imports
     import-outside-toplevel,  # common pattern in ansible related code
-    no-name-in-module,  # inconsistent results which depend on the availability of imports
     no-self-use,
     raise-missing-from,  # Python 2.x does not support raise from
     too-few-public-methods,
@@ -48,3 +46,10 @@ function-rgx=[a-z_][a-z0-9_]{1,40}$
 
 preferred-modules =
     distutils.version:ansible.module_utils.compat.version,
+
+# These modules are used by ansible-test, but will not be present in the virtual environment running pylint.
+# Listing them here makes it possible to enable the import-error check.
+ignored-modules =
+    cryptography,
+    coverage,
+    yamllint,