Use enablerepo instead of no_rhsm to check custom repos

We were using the no_rhsm option to skip the check for custom
repositories, and since the system can be unregistered or
pre-registered, there is no need anymore to use no_rhsm in this action,
instead, we can use enablerepo directly to validate if the repositories
are valid or not.

convert2rhel/actions/system_checks/custom_repos_are_valid.py

@@ -37,8 +37,8 @@ def run(self):
         super(CustomReposAreValid, self).run()
         logger.task("Prepare: Check if --enablerepo repositories are accessible")
 
-        if not tool_opts.no_rhsm:
-            logger.info("Did not perform the check of repositories due to the use of RHSM for the conversion.")
+        if not tool_opts.enablerepo:
+            logger.info("Skipping the check as there was no --enablerepo option detected in the command-line.")
             return
 
         output, ret_code = call_yum_cmd(

convert2rhel/unit_tests/actions/system_checks/custom_repos_are_valid_test.py

@@ -34,7 +34,7 @@ def test_custom_repos_are_valid(custom_repos_are_valid_action, monkeypatch, capl
         "call_yum_cmd",
         unit_tests.CallYumCmdMocked(return_code=0, return_string="Abcdef"),
     )
-    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "no_rhsm", True)
+    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "enablerepo", ["rhel-7-server-optional-rpms"])
 
     custom_repos_are_valid_action.run()
 
@@ -47,7 +47,7 @@ def test_custom_repos_are_invalid(custom_repos_are_valid_action, monkeypatch):
         "call_yum_cmd",
         unit_tests.CallYumCmdMocked(return_code=1, return_string="YUM/DNF failed"),
     )
-    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "no_rhsm", True)
+    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "enablerepo", ["rhel-7-server-optional-rpms"])
 
     custom_repos_are_valid_action.run()
 
@@ -63,11 +63,11 @@ def test_custom_repos_are_invalid(custom_repos_are_valid_action, monkeypatch):
 
 
 def test_custom_repos_are_valid_skip(custom_repos_are_valid_action, monkeypatch, caplog):
-    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "no_rhsm", False)
+    monkeypatch.setattr(custom_repos_are_valid.tool_opts, "enablerepo", [])
 
     custom_repos_are_valid_action.run()
 
     assert (
-        "Did not perform the check of repositories due to the use of RHSM for the conversion."
+        "Skipping the check as there was no --enablerepo option detected in the command-line."
         in caplog.records[-1].message
     )