Remove unlicensed code from internet in sanity checks

Our code should not include code that is not clearly licensed
from third party sources.

This commit utilizes python stdlib instead of code from
3rd party source.

roles/lib_utils/action_plugins/sanity_checks.py

@@ -2,6 +2,7 @@
 Ansible action plugin to ensure inventory variables are set
 appropriately and no conflicting options have been provided.
 """
+import fnmatch
 import json
 import re
 
@@ -534,23 +535,6 @@ def is_registry_match(item, pattern):
     of the registries will be listed without the port and insecure flag.
     """
     item = "schema://" + item.split('://', 1)[-1]
-    return is_match(urlparse(item).hostname, pattern.rsplit(':', 1)[0])
-
-
-# taken from https://leetcode.com/problems/wildcard-matching/discuss/17845/python-dp-solution
-# (the same source as for openshift/origin/pkg/util/strings/wildcard.go)
-def is_match(item, pattern):
-    """implements DP algorithm for string matching"""
-    length = len(item)
-    if len(pattern) - pattern.count('*') > length:
-        return False
-    matches = [True] + [False] * length
-    for i in pattern:
-        if i != '*':
-            for index in reversed(range(length)):
-                matches[index + 1] = matches[index] and (i == item[index] or i == '?')
-        else:
-            for index in range(1, length + 1):
-                matches[index] = matches[index - 1] or matches[index]
-        matches[0] = matches[0] and i == '*'
-    return matches[-1]
+    pat = pattern.rsplit(':', 1)[0]
+    name = urlparse(item).hostname
+    return fnmatch.fnmatch(name, pat)

roles/lib_utils/test/test_sanity_checks.py

@@ -46,3 +46,7 @@ def test_is_registry_match():
     assert not is_registry_match("https://example.com:443/prefix", pat_matchport)
     assert not is_registry_match("docker.io/library/my", pat_matchport)
     assert not is_registry_match("https://hello.registry/myapp", pat_matchport)
+
+
+if __name__ == '__main__':
+    test_is_registry_match()