run all test-*.sh unit tests

this lets us add more test-*.sh tests over time. There is a set
of tests waiting in the wings with the feature grid patch series.

tests are good, m'kay.

Change-Id: I913c86a9d5b6a1b74db36266e996cb4d6073f75b

modules/openstack_project/files/jenkins_job_builder/config/devstack-gate.yaml

@@ -1270,7 +1270,7 @@
     builders:
       - revoke-sudo
       - gerrit-git-prep
-      - shell: "./test-functions.sh"
+      - shell: "./test-*.sh"
 
     publishers:
       - console-log