Add validation methods for PAP REST API

Also made the identifier classes comparable.
Stupid tabs.

Change-Id: I54c0595c6a2c61a1b72b58fe1d667657f9d5d71e
Issue-ID: POLICY-1542
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/models-pdp/pom.xml b/models-pdp/pom.xml
index 8eb7231..a3146fa 100644
--- a/models-pdp/pom.xml
+++ b/models-pdp/pom.xml
@@ -45,6 +45,11 @@
             <version>${project.version}</version>
         </dependency>
         <dependency>
+          <groupId>org.onap.policy.common</groupId>
+          <artifactId>common-parameters</artifactId>
+          <version>${policy.common.version}</version>
+        </dependency>
+        <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
             <scope>test</scope>