pylint: Enable useless-suppression

https://pylint.pycqa.org/en/latest/user_guide/message-control.html#detecting-useless-disables:

> As pylint gets better and false positives are removed, disables that
  became useless can accumulate and clutter the code. In order to clean
  them you can enable the useless-suppression warning.

This doesn't enforce useless-suppression warnings as errors. The idea is
cleanup of these warings on every Pylint's bump.

Fixes: freeipa/freeipa-healthcheck#244
Signed-off-by: Stanislav Levin <[email protected]>

pylintrc

@@ -28,10 +28,18 @@ valid-metaclass-classmethod-first-arg=cls
 
 enable=
     all,
-    python3
+    python3,
+    useless-suppression,
 
 disable=
-    I,
+    bad-inline-option,
+    c-extension-no-member,
+    deprecated-pragma,
+    file-ignored,
+    locally-disabled,
+    raw-checker-failed,
+    suppressed-message,
+    use-symbolic-message-instead,
     duplicate-code,
     interface-not-implemented,
     no-self-use,

tests/test_ipa_dns.py

@@ -96,8 +96,8 @@ def query_uri(hosts):
     if version.MAJOR < 2 or (version.MAJOR == 2 and version.MINOR == 0):
         m = message.Message()
     elif version.MAJOR == 2 and version.MINOR > 0:
-        m = message.QueryMessage()  # pylint: disable=E1101
-        m = message.make_response(m)  # pylint: disable=E1101
+        m = message.QueryMessage()
+        m = message.make_response(m)
 
     rdtype = rdatatype.URI
     for name in ('_kerberos.', '_kpasswd.'):
@@ -158,8 +158,8 @@ def fake_query(qname, rdtype=rdatatype.A, rdclass=rdataclass.IN, count=1,
     if version.MAJOR < 2 or (version.MAJOR == 2 and version.MINOR == 0):
         m = message.Message()
     elif version.MAJOR == 2 and version.MINOR > 0:
-        m = message.QueryMessage()  # pylint: disable=E1101
-        m = message.make_response(m)  # pylint: disable=E1101
+        m = message.QueryMessage()
+        m = message.make_response(m)
     if rdtype in (rdatatype.A, rdatatype.AAAA):
         fqdn = DNSName(qname)
         fqdn = fqdn.make_absolute()