Update license plugin to exclude json files

Change-Id: I843185af796729c71ccc9aa822844436d4804c3f
Signed-off-by: Skip Wonnell <kw5258@att.com>
Issue-ID: APPC-87
diff --git a/pom.xml b/pom.xml
index fa874f6..4cc4002 100644
--- a/pom.xml
+++ b/pom.xml
@@ -548,6 +548,10 @@
                     <canUpdateDescription>true</canUpdateDescription>
                     <canUpdateLicense>true</canUpdateLicense>
                     <emptyLineAfterHeader>true</emptyLineAfterHeader>
+                    <!-- exclude json files -->
+                    <excludes>
+                        <exclude>**/*.json</exclude>
+                    </excludes>
                 </configuration>
                 <executions>
                     <execution>