Bring back the old HPA decoder & model

Bringing back the old HPA policy decoder and its related classes and
tests. The distribution framework will support both the new PAP/API and
the old policy engine in El Alto release.

Issue-ID: POLICY-1871
Change-Id: Iab911b793207a09b02e906ed6913c54bc252f64c
Signed-off-by: ramverma <ram.krishna.verma@est.tech>
diff --git a/model/pom.xml b/model/pom.xml
index 9cd5365..9e7e9f6 100644
--- a/model/pom.xml
+++ b/model/pom.xml
@@ -35,5 +35,10 @@
             <artifactId>utils</artifactId>
             <version>${policy.common.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models</groupId>
+            <artifactId>policy-models-tosca</artifactId>
+            <version>${policy.models.version}</version>
+        </dependency>
     </dependencies>
 </project>