update onboarding spring

as requested for security purposes upgrading spring to 4.3.15.RELEASE

Change-Id: Ia2fd120860384291a38272bea5331467a395984f
Issue-ID: SDC-1323
Signed-off-by: Michael Lando <ml636r@att.com>
diff --git a/onboarding/pom.xml b/onboarding/pom.xml
index 21a4d82..1987f19 100644
--- a/onboarding/pom.xml
+++ b/onboarding/pom.xml
@@ -100,7 +100,7 @@
         <servlet.version>2.5</servlet.version>
         <slf4j.version>1.7.21</slf4j.version>
         <snakeyaml.version>1.17</snakeyaml.version>
-        <spring.framework.version>4.3.4.RELEASE</spring.framework.version> <!-- orignal 4.0.7.RELEASE 4.1.3.RELEASE-->
+        <spring.framework.version>4.3.15.RELEASE</spring.framework.version> <!-- orignal 4.0.7.RELEASE 4.1.3.RELEASE-->
         <swagger.version>1.5.3</swagger.version>
         <testng.version>6.9.10</testng.version> <!--new 6.9.13.6 still shows blackduck risk -->
         <woodstox.version>4.4.1</woodstox.version>