TST: Appropriately mark JournalMatch transmitter test as skipped

fail2ban/tests/servertestcase.py

@@ -526,8 +526,12 @@ class Transmitter(TransmitterBase):
 		self.assertEqual(
 			self.transm.proceed(["status", "INVALID", "COMMAND"])[0],1)
 
-	if filtersystemd: # pragma: systemd no cover
 	def testJournalMatch(self):
+		if not filtersystemd:
+			if sys.version_info >= (2, 7):
+				raise unittest.SkipTest(
+					"systemd python interface not avilable")
+			return
 		jailName = "TestJail2"
 		self.server.addJail(jailName, "systemd")
 		values = [