ngcp-services-{ce,pro}: depend on specific ngcp-ossbss-common-{ce,pro} package

As noted by Andreas in release-trunk installations we get
ngcp-ossbss-common-ce installed by default on PRO installations,
being the result of weak dependencies.  Let's try to solve that.

From: Michael Prokop <mprokop@sipwise.com>

debian/control

@@ -149,7 +149,7 @@ Depends: bzip2,
          ngcp-monitoring-tools,
          ngcp-ossbss-apache,
          ngcp-ossbss-billing,
-         ngcp-ossbss-common-ce | ngcp-ossbss-common-pro | ngcp-ossbss-common-carrier,
+         ngcp-ossbss-common-pro,
          ngcp-ossbss-system,
          ngcp-ossbss-voip,
          ngcp-ossbss-xmldispatcher,
@@ -198,7 +198,7 @@ Depends: bzip2,
          ngcp-monitoring-tools,
          ngcp-ossbss-apache,
          ngcp-ossbss-billing,
-         ngcp-ossbss-common-ce | ngcp-ossbss-common-pro | ngcp-ossbss-common-carrier,
+         ngcp-ossbss-common-pro,
          ngcp-ossbss-system,
          ngcp-ossbss-voip,
          ngcp-ossbss-xmldispatcher,
@@ -243,7 +243,7 @@ Depends: bsd-mailx | mailx,
          ngcp-mediator,
          ngcp-ossbss-apache,
          ngcp-ossbss-billing,
-         ngcp-ossbss-common-ce | ngcp-ossbss-common-pro | ngcp-ossbss-common-carrier,
+         ngcp-ossbss-common-ce,
          ngcp-ossbss-system,
          ngcp-ossbss-voip,
          ngcp-ossbss-xmldispatcher,