Add spring version properties.

Issue-ID: CCSDK-1352
Signed-off-by: Brinda Santh <brindasanth@in.ibm.com>
Change-Id: I77bcd9e986ab802a243dd18f83e3d995a8832a1e
diff --git a/springboot/springboot2/pom.xml b/springboot/springboot2/pom.xml
index e23814e..72cdb77 100755
--- a/springboot/springboot2/pom.xml
+++ b/springboot/springboot2/pom.xml
@@ -93,6 +93,10 @@
 		<sdnctl.mdsal.resource.version>${ccsdk.sli.adaptors.version}</sdnctl.mdsal.resource.version>
 		<sdnctl.slipluginutils.version>${ccsdk.sli.core.version}</sdnctl.slipluginutils.version>
 
+		<!-- Spring versions -->
+		<spring.boot.version>2.1.6.RELEASE</spring.boot.version>
+		<spring.version>5.1.8.RELEASE</spring.version>
+
 		<!-- Kotlin versions -->
 		<kotlin.version>1.3.41</kotlin.version>
 		<kotlin.maven.version>1.3.41</kotlin.maven.version>
@@ -109,8 +113,7 @@
 		<junit.version>4.12</junit.version>
 		<logback.version>1.2.3</logback.version>
 		<mariadb.connector.version>2.1.1</mariadb.connector.version>
-		<mariadb4j.version>2.2.3</mariadb4j.version>
-		<spring.version>4.3.18.RELEASE</spring.version>
+		<mariadb4j.version>2.2.3</mariadb4j.version>		
 		<slf4j.version>1.7.25</slf4j.version>
 		<testng.version>6.11</testng.version>
 		<tomcat-jdbc.version>8.5.14</tomcat-jdbc.version>