Use non-deprecated push with topic

It seems that the push that was used in this test was deprecated.
I used the current method that is supported.

Change-Id: I253a11ddd2b1e5e9d2287d54e2027b42ee7a74f7

src/test/java/com/googlesource/gerrit/plugins/hideactions/HideActionsActionVisitorIT.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/hideactions/HideActionsActionVisitorIT.java b/src/test/java/com/googlesource/gerrit/plugins/hideactions/HideActionsActionVisitorIT.java
index f464963..3cf00f8 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/hideactions/HideActionsActionVisitorIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/hideactions/HideActionsActionVisitorIT.java
@@ -54,6 +54,6 @@
   private PushOneCommit.Result createANewChangeWithTopic() throws Exception {
     return pushFactory
         .create(admin.newIdent(), testRepo, "a message", "a.txt", "content\n")
-        .to("refs/for/master/" + name("topic"));
+        .to("refs/for/master" + "%topic=" + name("topic"));
   }
 }