added spring-tx dependency to server

openid-connect-server/pom.xml

@@ -31,6 +31,12 @@
 			<artifactId>openid-connect-common</artifactId>
 			<version>1.1.0-SNAPSHOT</version>
 		</dependency>
+		<dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-tx</artifactId>
+            <version>${org.springframework-version}</version>
+        </dependency>
+		
 	</dependencies>
     <description>OpenID Connect server libraries for Spring and Spring Security.</description>
     <url />