set local platform

Author: wxtim

.github/workflows/test.yml

@@ -91,6 +91,14 @@ jobs:
           touch "$CONF_PATH/global.cylc"
           ln -s "$CONF_PATH/global.cylc" "$CONF_PATH/global-tests.cylc"
 
+          cat >> "$CONF_PATH/global.cylc" <<__HERE__
+          [platforms]
+            [[_local_background_indep_tcp]]
+              hosts = localhost
+              install target = localhost
+              ssh command = ssh -oBatchMode=yes -oConnectTimeout=8 -oStrictHostKeyChecking=no
+          __HERE__
+
           # Check that Cylc Review is installed!
           # (We're only interested if it emits an error):
           cylc review --help > /dev/null || exit 1