stack/monitor: Fix monitor-httpd wrapper section.

There was two sections writing the file `bin/monitor-httpd` which led to some problems when running things

/reviewed-on !426

stack/monitor/buildout.hash.cfg

@@ -14,4 +14,4 @@
 # not need these here).
 [monitor2-template]
 filename = instance-monitor.cfg.jinja2.in
-md5sum = 2d92f6c50569acbedbc075a84fadbed0
+md5sum = a8ae4a8685fd6d7263bf6f6db02fbdc5

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

@@ -65,7 +65,7 @@ recipe = slapos.cookbook:certificate_authority.request
 key-file = ${monitor-httpd-conf-parameter:key-file}
 cert-file = ${monitor-httpd-conf-parameter:cert-file}
 executable = ${monitor-httpd-wrapper:wrapper-path}
-wrapper = ${directory:bin}/monitor-httpd
+wrapper = ${directory:bin}/ca-monitor-httpd
 
 [ca-monitor-httpd-service]
 recipe = slapos.cookbook:wrapper