Use username and password from --proxy=URL

* When URL in --proxy=URL contains username and password
  (e.g. --proxy=https://user:[email protected]:3128),
  then user and pass are used as proxy_user and proxy_pass
* The --proxyuser and --proxypassword have higher priority.
  Thus, it does not break backward compatibility.
* Added one unit test for this case

src/subscription_manager/managercli.py

@@ -467,6 +467,8 @@ def main(self, args=None):
             proxy_user, proxy_pass, proxy_hostname, proxy_port, proxy_prefix = rhsm.utils.parse_url(
                 self.options.proxy_url, default_port=default_proxy_port
             )
+            self.proxy_user = proxy_user
+            self.proxy_password = proxy_pass
             self.proxy_hostname = proxy_hostname
             self.proxy_port = int(proxy_port)
 

test/test_managercli.py

@@ -2484,6 +2484,24 @@ def test_list_by_default_with_options_from_super_class(self):
         self.cc._validate_options()
         self.assertTrue(self.cc.options.list)
 
+    def test_proxy_user_and_pass_from_url_overridden_by_cli_options(self):
+        """
+        Test that --proxyuser and --proxypassword have higher priority than --proxy
+        """
+        self.cc.main(
+            [
+                "--proxy",
+                "https://foo:[email protected]",
+                "--proxyuser",
+                "other-user",
+                "--proxypassword",
+                "other-password",
+            ]
+        )
+        self.cc._validate_options()
+        self.assertEqual(self.cc.proxy_user, "other-user")
+        self.assertEqual(self.cc.proxy_password, "other-password")
+
     def test_add_with_multiple_colons(self):
         self.cc.main(["--repo", "x", "--add", "url:http://example.com"])
         self.cc._validate_options()