stack/caucase: User shorter path for sock

  Reduce a little the path+filename for the socket file, as NGINX/Linux has a limitation for long paths on this instruction.

  This small change allow the resilience test works w/o kernel patches or workarrounds.

stack/caucase/buildout.hash.cfg

@@ -28,7 +28,7 @@ md5sum = a317d2f948cd3d16c860d05cc07ecf42
 
 [template-caucase]
 filename = instance-caucase.cfg.jinja2.in
-md5sum = 7db9e8bf23cf4689e7986c381b94d2cb
+md5sum = d31d4c9855d653d3d74c6133a7d85530
 
 [instance-caucase]
 filename = instance.cfg.in

stack/caucase/instance-caucase.cfg.jinja2.in

@@ -157,7 +157,7 @@ mode = 700
 
 [caucase-gunicorn]
 recipe = slapos.cookbook:wrapper
-socket = ${directory:ca-dir}/ca.flaskserver.sock
+socket = ${directory:ca-dir}/ng.sock
 command-line =  {{ gunicorn_bin }} caucase.wsgi:app -b unix:${:socket} -e CA_CONFIGURATION_FILE=${caucase-conf:output} --error-logfile ${:log-file} --pid ${:pid-file} --capture-output --timeout 60 --threads 2 --log-level error --preload
 log-file = ${directory:log}/ca-gunicorn-error.log
 pid-file = ${directory:run}/ca-gunicorn.pid