test: Mark tests as skipped if requirements were not satisfied

Instead of not creating the test at all, let's always create test but
simply mark them as skipped as this is more observable than simply not
creating the test at all.

test/integration-tests/integration-test-wrapper.py

@@ -365,6 +365,7 @@ def main() -> None:
     parser.add_argument('--coredump-exclude-regex', required=True)
     parser.add_argument('--sanitizer-exclude-regex', required=True)
     parser.add_argument('--rtc', action=argparse.BooleanOptionalAction)
+    parser.add_argument('--skip', action=argparse.BooleanOptionalAction)
     parser.add_argument('mkosi_args', nargs='*')
     args = parser.parse_args()
 
@@ -386,6 +387,10 @@ def main() -> None:
         print(f'TEST_NO_QEMU=1, skipping {args.name}', file=sys.stderr)
         exit(77)
 
+    if args.skip:
+        print(f'meson requirements for test {args.name} were not fulfilled, skipping', file=sys.stderr)
+        exit(77)
+
     for s in os.getenv('TEST_SKIP', '').split():
         if s in args.name:
             print(f'Skipping {args.name} due to TEST_SKIP', file=sys.stderr)