Move away from being a null-router

Ensure that the "install" state-file doesn't evaluate to empty: this
should prevent previously-witnessed CI errors without resorting to a
bunch of other ugly and/or brittle kludgery

Author: ferricoxide

flux-cli/package/install.sls

@@ -12,3 +12,5 @@ include:
   - flux-cli.package.win_install
 {%- endif %}
 
+Avoid being a null-router:
+  test.nop: []