Run gate-project-config-bashate on .sh files only

Like pep8 before we are trying to reduce the amount of jobs launched
in the check / gate pipelines. Over the last 200 commits only 2 or 3
files have been touched.

We are also reducing run-bashate.sh and remove unsourced files.

Change-Id: Ie77fad9a272fb41fbb48f94ceee910954e903939
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

tools/run-bashate.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 
 ROOT=$(readlink -fn $(dirname $0)/.. )
-find $ROOT -not -wholename \*.tox/\* -and -not -wholename \*.test/\* -and \( -name \*.sh -or -name \*rc -or -name functions\* \) -print0 | xargs -0 bashate -v
+find $ROOT -not -wholename \*.tox/\* -and -not -wholename \*.test/\* -and -name \*.sh -print0 | xargs -0 bashate -v

zuul/layout.yaml

@@ -1192,6 +1192,12 @@ jobs:
   - name: gate-bashate-devstack
     voting: false
 
+  - name: gate-project-config-bashate
+    files:
+      - '^.*\.sh$'
+      - 'test-requirements.txt'
+      - 'tox.ini'
+
   - name: gate-project-config-irc-access
     files:
       - 'accessbot/channels.yaml'