stack/caucase: make services auto restart on config change

use hash-existing-files feature of wrapper recipe to make
sevices restart automatically when they are re-requested with different
parameters.

software/erp5/test/test/test_balancer.py

@@ -427,12 +427,13 @@ class TestTLS(BalancerTestCase):
 
     # run caucase updater 90 days in the future, so that certificate is
     # renewed.
-    caucase_updater = os.path.join(
-        self.computer_partition_root_path,
-        'etc',
-        'service',
-        'caucase-updater',
-    )
+    caucase_updater, = glob.glob(
+        os.path.join(
+            self.computer_partition_root_path,
+            'etc',
+            'service',
+            'caucase-updater*',
+        ))
     process = pexpect.spawnu(
        "faketime +90days %s" % caucase_updater,
         env=dict(os.environ, PYTHONPATH=''),
@@ -772,7 +773,7 @@ class TestClientTLS(BalancerTestCase):
               self.computer_partition_root_path,
               'etc',
               'service',
-              'caucase-updater-*',
+              'caucase-updater-*-*',
           ))
       self.assertEqual(len(caucase_updater_list), 2)
 

stack/caucase/buildout.hash.cfg

@@ -15,4 +15,4 @@
 
 [caucase-jinja2-library]
 filename = caucase.jinja2.library
-md5sum = a59dec6d2ecc1cc4dcd0292d571c79d8
+md5sum = b0f0d99882e65fe5942d675bcfb3b06d

stack/caucase/caucase.jinja2.library

@@ -27,6 +27,8 @@ command-line = '{{ buildout_bin_directory }}/caucased'
   --service-auto-approve-count '{{ service_auto_approve_count }}'
   --user-auto-approve-count    '{{ user_auto_approve_count }}'
   --lock-auto-approve-count
+hash-existing-files =
+  ${buildout:directory}/software_release/buildout.cfg
 
 {% if promise -%}
 [{{ prefix }}-promise]
@@ -110,6 +112,8 @@ command-line = '{{ buildout_bin_directory }}/caucase-updater'
   {% if key_path %}--key '{{ key_path }}' {%- endif %}
   {% if on_renew %}--on-renew '{{ on_renew }}' {%- endif %}
   {% if max_sleep %}--max-sleep '{{ max_sleep }}' {%- endif %}
+hash-existing-files =
+  ${buildout:directory}/software_release/buildout.cfg
 {% if promise -%}
 [{{ prefix }}-promise]
 <= monitor-promise-base