scripts: allow choosing which snap package to build

Change-Id: I518d45903ec29cb6afc04916b03750cb3653d44a

scripts/build-package-snap.sh

@@ -24,7 +24,7 @@
 set -e
 
 cp -rp /opt/ring-project-ro /opt/ring-project
-cd /opt/ring-project/packaging/rules/snap/jami/
+cd /opt/ring-project/packaging/rules/snap/${SNAP_PKG_NAME}/
 
 # set the version and tarball filename
 sed -i "s/RELEASE_VERSION/${RELEASE_VERSION}/g" snapcraft.yaml

scripts/make-packaging-target.py

@@ -263,6 +263,7 @@ def run_generate_all(parsed_args):
         {
             "distribution": "snap",
             "output_file": ".packages-built",
+            "options": "-e SNAP_PKG_NAME=${SNAP_PKG_NAME}",
         },
 
     ]