Stabelized automation integration test (#1944)

Signed-off-by: Kai Kreuzer <kai@openhab.org>

bundles/org.openhab.core.automation/src/main/java/org/openhab/core/automation/internal/RuleEngineImpl.java

@@ -1460,4 +1460,13 @@ public class RuleEngineImpl implements RuleManager, RegistryChangeListener<Modul
         }
         return false;
     }
+
+    /**
+     * Returns whether the rule engine has been started
+     *
+     * @return true, if the rule engine has been started
+     */
+    public boolean isStarted() {
+        return started;
+    }
 }

itests/org.openhab.core.automation.integration.tests/src/main/java/org/openhab/core/automation/integration/test/AutomationIntegrationTest.java

@@ -170,6 +170,10 @@ public class AutomationIntegrationTest extends JavaOSGiTest {
         // start rule engine
         ((RuleEngineImpl) ruleEngine).onReadyMarkerAdded(new ReadyMarker("", ""));
 
+        waitForAssert(() -> {
+            assertThat(((RuleEngineImpl) ruleEngine).isStarted(), is(true));
+        }, 5000, 1000);
+
         logger.info("@Before.finish");
     }