Add toString to SubmitRequirementInfo to make broken tests indicative

Change-Id: Iafe6f254037721d6ce152a4d0cf299da96008e96
diff --git a/java/com/google/gerrit/extensions/common/SubmitRequirementInfo.java b/java/com/google/gerrit/extensions/common/SubmitRequirementInfo.java
index a940403..53f0375 100644
--- a/java/com/google/gerrit/extensions/common/SubmitRequirementInfo.java
+++ b/java/com/google/gerrit/extensions/common/SubmitRequirementInfo.java
@@ -14,6 +14,7 @@
 
 package com.google.gerrit.extensions.common;
 
+import com.google.common.base.MoreObjects;
 import java.util.Map;
 import java.util.Objects;
 
@@ -50,4 +51,14 @@
   public int hashCode() {
     return Objects.hash(status, fallbackText, type, data);
   }
+
+  @Override
+  public String toString() {
+    return MoreObjects.toStringHelper(this)
+        .add("status", status)
+        .add("fallbackText", fallbackText)
+        .add("type", type)
+        .add("data", data)
+        .toString();
+  }
 }