Fix local font directory for cloudooo

Even though there is no integrated way of putting for fonts there, cloudooo supports additional fonts in `~/srv/font`

This was not working because of a leading space in the fontconfig

See merge request nexedi/slapos!966

component/fontconfig/buildout.hash.cfg

 [template-fonts-conf]
 filename = fonts.conf.in
-md5sum = 6967e553630d107fc0a59b14de8b0251
+md5sum = a31030785c7b54bfd33320c87f6b5699

component/fontconfig/fonts.conf.in

@@ -14,10 +14,14 @@
  #}
 <fontconfig>
   <cachedir>{{ cachedir | escape}}</cachedir>
-  {% for font in fonts.splitlines() -%}
-    <dir>{{ font | escape}}</dir>
-  {% endfor %}
-  {% for include in includes.splitlines() -%}
-    <include>{{ include | escape}}</include>
-  {% endfor %}
+  {%- for font in fonts.splitlines() -%}
+    {% if font.strip() %}
+    <dir>{{ font.strip() | escape}}</dir>
+    {%- endif %}
+  {%- endfor %}
+  {%- for include in includes.splitlines() -%}
+    {% if include.strip() %}
+    <include>{{ include.strip() | escape}}</include>
+    {%- endif %}
+  {%- endfor %}
 </fontconfig>

software/cloudooo/buildout.hash.cfg

@@ -18,4 +18,4 @@ md5sum = e986de01a57161b32425f1cd3ccac924
 
 [template-cloudooo-instance]
 filename = instance-cloudooo.cfg.in
-md5sum = f2b05132cee3a012c3a41b904565204b
+md5sum = 9e1a66cf18d7c30c14afeb66c20afb46