Fix haproxy bundle generation

This fixes the `certificates` command to not include CSRs in
the haproxy bundle.
The regex was wrong.

Change-Id: If25a6d5dd40f507fea4470be01baeeb7c8a790b4

ansible/roles/certificates/tasks/generate.yml

@@ -60,7 +60,7 @@
 
     - name: Creating external Server PEM File
       assemble:
-        regexp: '.*[crt|key]'
+        regexp: \.(crt|key)$
         src: "{{ external_dir }}"
         dest: "{{ kolla_external_fqdn_cert }}"
         mode: "0660"
@@ -128,7 +128,7 @@
 
     - name: Creating internal Server PEM File
       assemble:
-        regexp: '.*[crt|key]'
+        regexp: \.(crt|key)$
         src: "{{ internal_dir }}"
         dest: "{{ kolla_internal_fqdn_cert }}"
         mode: "0660"