Fix high priority findbugs reported issues

Fixed some code that was reporting findbugs errors

Implemented a suppression mechanism for findbugs
reported errors and a suppression file.

Change-Id: Ie8a2e84cc57ec6ddfa14d782ee89feb095b9dd59
diff --git a/tools/build/conf/src/main/resources/onos/findbugs-suppressions.xml b/tools/build/conf/src/main/resources/onos/findbugs-suppressions.xml
new file mode 100644
index 0000000..eb5a385
--- /dev/null
+++ b/tools/build/conf/src/main/resources/onos/findbugs-suppressions.xml
@@ -0,0 +1,30 @@
+<!--
+  ~ Copyright 2014 Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<FindBugsFilter>
+
+    <!-- False positives on calls to CompletableFuture methods with a null
+         parameter -->
+    <Match>
+        <Class name="~org\.onlab\.onos\.store\.service\.impl\..*" />
+        <Bug pattern="NP_NONNULL_PARAM_VIOLATION" />
+    </Match>
+
+    <!-- Filter out testing application -->
+    <Match>
+        <Class name="~org\.onlab\.onos\.foo\..*" />
+    </Match>
+
+</FindBugsFilter>