Merge branch 'stable-2.15'

* stable-2.15:
  Fix submit on push for same commit on multiple branches

Change-Id: I411b1854d353988fe82e84dfb0722248a577060f

java/com/google/gerrit/acceptance/AbstractDaemonTest.java

@@ -1555,4 +1555,10 @@ public abstract class AbstractDaemonTest {
   protected void fail() throws Exception {
     assert_().fail();
   }
+
+  protected void enableCreateNewChangeForAllNotInTarget() throws Exception {
+    ProjectConfig config = projectCache.checkedGet(project).getConfig();
+    config.getProject().setCreateNewChangeForAllNotInTarget(InheritableBoolean.TRUE);
+    saveProjectConfig(project, config);
+  }
 }