Adding pdp-common module to policy/common

1) Adding pdp-common module to policy/common. So that all common code
across various pdps will be at one place.
2) Adding java classes for PDP_STATUS, PDP_UPDATE, PDP_STATE_CHANGE &
PDP_HEALTH_CHECK messages.
3) Adding enums for PDPHeathStatus, PDPResponseStatus & PdpState.
4) Adding relevant test cases.

Change-Id: I13e62f393fbd1c261696783cfe4b7dfff72625ba
Issue-ID: POLICY-1443
Signed-off-by: ramverma <ram.krishna.verma@est.tech>

1 files changed, 1 insertions, 0 deletions

diff --git a/pom.xml b/pom.xml
index 0ff66762..3b7d351e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,6 +72,7 @@
         <module>integrity-audit</module>
         <module>integrity-monitor</module>
         <module>policy-endpoints</module>
+        <module>pdp-common</module>
     </modules>
 
     <dependencyManagement>