pom: exclude novnc for rat license checks (apache#4097)

Adding novnc license exclusion to the rat plugin

(cherry picked from commit 38298d1)
Signed-off-by: Rohit Yadav <[email protected]>

Author: davidjumani

pom.xml

@@ -1000,6 +1000,7 @@
                             <exclude>systemvm/agent/conf/environment.properties</exclude>
                             <exclude>systemvm/agent/js/jquery.js</exclude>
                             <exclude>systemvm/agent/js/jquery.flot.navigate.js</exclude>
+                            <exclude>systemvm/agent/noVNC/**</exclude>
                             <exclude>systemvm/debian/**</exclude>
                             <exclude>test/integration/component/test_host_ha.sh</exclude>
                             <exclude>test/systemvm/README.md</exclude>