Align the clamp code on policy project

Inherit from the policy integration parent + fix all checkstyle issues detected by policy checkstyle (google) config

Issue-ID: POLICY-2922
Change-Id: I616846bbda8bb0f6250a842c248836c40e1068cf
Signed-off-by: sebdet <sebastien.determe@intl.att.com>
diff --git a/pom.xml b/pom.xml
index 0b78217..ab21396 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,11 +30,12 @@
 	<name>clamp</name>
 
 
-	<parent>
-		<groupId>org.onap.oparent</groupId>
-		<artifactId>oparent</artifactId>
-		<version>2.1.0</version>
-	</parent>
+    <parent>
+	    <groupId>org.onap.policy.parent</groupId>
+         <artifactId>integration</artifactId>
+         <version>3.3.0-SNAPSHOT</version>
+         <relativePath />
+    </parent>
 
 	<description>
 	       This is the MAVEN project that builds everything for ONAP CLAMP.