Copy generic-resource-api client from sdnc/apps to sdnc/northbound, so that library will be automatically regenerated/recompiled when generic-resource-api yang model changes.

The package names will change from org.onap.sdnc.apps.* to org.onap.sdnc.northbound.*

The maven reference will change from:

<dependency>

  <groupId>org.onap.sdnc.apps</groupId>

   <artifactId>client</artifactId>

  <version>1.4.0-SNAPSHOT</version>

</dependency>

to:

<dependency>

   <groupId>org.onap.sdnc.northbound</groupId>

   <artifactId>generic-resource-api-client</artifactId>

  <version>1.4.0-SNAPSHOT</version>

</dependency>