Addendum patch for YARN-5180 updating findbugs-exclude.xml

(cherry picked from commit 8554aee1bef5aff9e49e5e9119d6a7a4abf1c432)

hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml

@@ -516,6 +516,11 @@
     <Bug pattern="URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD" />
   </Match>
 
+  <Match>
+    <Class name="org.apache.hadoop.yarn.api.records.ResourceRequest" />
+    <Method name="equals" />
+    <Bug pattern="RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE" />
+  </Match>
   <Match>
     <Package name="org.apache.hadoop.yarn.api.records.impl.pb" />
     <Bug pattern="NP_BOOLEAN_RETURN_NULL" />