Ensure repos are set up for cockpit tests

When running these tests on updates we inherit the main disk
image from server_cockpit_default, which has the repo config,
but the actual repo data is on HDD_3 which is not inherited.
We need to re-download the updates here to ensure they're
available to the tests (the automatic update test installs the
dnf-automatic package, so it should pull it from the update repo
if it is part of the update being tested).

Signed-off-by: Adam Williamson <awilliam@redhat.com>

main.pm

@@ -248,7 +248,6 @@ sub _load_early_postinstall_tests {
     # Appropriate login method for install type
     if (get_var("DESKTOP")) {
         _load_instance("tests/_graphical_wait_login", $instance);
-        _load_instance("tests/_snapshot_only") if (get_var("LOGIN_SNAPSHOT"));
     }
     # Test non-US input at this point, on language tests
     if (get_var("SWITCHED_LAYOUT") || get_var("INPUT_METHOD")) {
@@ -264,7 +263,6 @@ sub _load_early_postinstall_tests {
     # the installation is interrupted on purpose.
     unless (get_var("DESKTOP") || get_var("CRASH_REPORT")) {
         _load_instance("tests/_console_wait_login", $instance);
-        _load_instance("tests/_snapshot_only") if (get_var("LOGIN_SNAPSHOT"));
     }
 }
 

templates.fif.json

@@ -2594,7 +2594,7 @@
                 "+START_AFTER_TEST": "server_cockpit_default",
                 "BOOTFROM": "c",
                 "LOGIN_SNAPSHOT": "1",
-                "POSTINSTALL": "server_cockpit_updates server_cockpit_autoupdate",
+                "POSTINSTALL": "_cockpit_setup server_cockpit_updates server_cockpit_autoupdate",
                 "ROOT_PASSWORD": "weakpassword",
                 "USER_LOGIN": "false"
             }

tests/_cockpit_setup.pm

@@ -5,6 +5,8 @@ use utils;
 
 sub run {
     my $self = shift;
+    # for update testing, ensure the update repos are set up
+    repo_setup if (get_var("ADVISORY_OR_TASK"));
 }
 
 sub test_flags {