Check if the Nvidia popup appears somewhere else

As stated in bsc#1220889, the Nvidia popup can show up randomly, so I
added a check to verify if it appears during the package installation
process.

tests/wsl/firstrun.pm

@@ -55,8 +55,10 @@ sub enter_user_details {
 }
 
 sub license {
-    # license agreement
-    assert_screen 'wsl-license';
+    # License agreement
+    # If we are enabling SLED, this screen will be checked
+    # a second time after installing modules. That's the reason of the timeout
+    assert_screen 'wsl-license', timeout => 240;
     send_key 'alt-n';
 
     if (is_sle) {
@@ -146,9 +148,8 @@ sub run {
         # during the "development period". Also, it looks like that code was
         # duplicated in L98 of this file. Didn't want to remove it completely
         # just in case it returns...
-
-        # assert_screen ['trust_nvidia_gpg_keys', 'wsl-installation-completed'], timeout => 240;
-        # send_key 'alt-t' if (match_has_tag 'trust_nvidia_gpg_keys');
+        assert_screen ['trust_nvidia_gpg_keys', 'wsl-installation-completed'], timeout => 240;
+        send_key 'alt-t' if (match_has_tag 'trust_nvidia_gpg_keys');
 
         assert_screen('wsl-installation-completed', 240);
         send_key 'alt-f';