Update for OpenStack zed

Use stable/zed upper-constraints.

Drop duplicated glance entrypoint.

Change-Id: Id55e847e289e2eddf73aef2d2f15a63f719a4b14

snapcraft.yaml

@@ -1,5 +1,5 @@
 name: openstackclients
-version: yoga
+version: zed
 summary: OpenStack Client tools
 description: |
   OpenStackClient (aka OSC) is a command-line client for OpenStack
@@ -85,11 +85,6 @@ apps:
     plugs:
       - network
       - home
-  glance:
-    command: bin/glance
-    plugs:
-      - network
-      - home
   heat:
     command: bin/heat
     plugs:
@@ -184,7 +179,7 @@ parts:
       - setuptools-rust
       - Cython
     constraints:
-      - https://raw.githubusercontent.com/openstack/requirements/master/upper-constraints.txt
+      - https://raw.githubusercontent.com/openstack/requirements/stable/zed/upper-constraints.txt
     build-packages:
       - libffi-dev
       - libssl-dev