oeqa/runtime/systemd: Ensure test runs only on systemd images

When enabled in DISTRO_FEATURES the test may run on a system without systemd.
Fix this.

(From OE-Core rev: c2b473390dec0f5132d5b4bff6d3c35214eb898b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/cases/systemd.py

@@ -137,6 +137,7 @@ class SystemdServiceTests(SystemdTest):
             status = self.target.run('mount -oro,remount /')[0]
             self.assertTrue(status == 0, msg='Remounting / as r/o failed')
 
+    @OETestDepends(['systemd.SystemdBasicTests.test_systemd_basic'])
     @skipIfNotFeature('minidebuginfo', 'Test requires minidebuginfo to be in DISTRO_FEATURES')
     @OEHasPackage(['busybox'])
     def test_systemd_coredump_minidebuginfo(self):