Enable GLOBAL_VENV

... because it is required in Ubuntu 24.04 .

Change-Id: Iba939edff0f015900ccb72c761c1e3d833805feb
(cherry picked from commit b03667a2a0)
(cherry picked from commit 51efb9f183)

.zuul.yaml

@@ -29,7 +29,6 @@
         TEMPEST_PLUGINS: '/opt/stack/heat-tempest-plugin'
         HEAT_USE_MOD_WSGI: True
         CEILOMETER_PIPELINE_INTERVAL: 60
-        GLOBAL_VENV: False
       devstack_services:
         tls-proxy: false
         s-account: false

devstack/lib/heat

@@ -295,6 +295,10 @@ function install_heat {
            install_apache_wsgi
        fi
     fi
+    if [[ "$GLOBAL_VENV" == "True" ]] ; then
+        # TODO(tkajinam): find a better solution for this
+        sudo ln -sf $HEAT_BIN_DIR/heat-manage /usr/local/bin
+    fi
 }
 
 # start_heat() - Start running processes, including screen