provide postgres .pid file for slapreport

stack/lapp/buildout.cfg

@@ -85,7 +85,7 @@ mode = 0644
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/postgres/instance-postgres.cfg.in
 output = ${buildout:directory}/instance-postgres.cfg
-md5sum = f647755490c35e8a4c85561c97893b19
+md5sum = 8227a2c382e84ddacc733cf998e6cdc3
 mode = 0644
 
 [instance-postgres-import]

stack/lapp/postgres/instance-postgres.cfg.in

@@ -214,7 +214,7 @@ path = $${basedirectory:services}/slapmonitor
 
 [slapreport]
 recipe = slapos.cookbook:slapreport
-pid-file = $${basedirectory:run}/mariadb.pid
+pid-file = $${postgres-instance:pgdata-directory}/postmaster.pid
 database-path = $${basedirectory:log}/slapmonitor.db
 consumption-log-path = $${basedirectory:log}/instance_consumption.log
 logbox-ip = 87.98.152.12