gitlab: Determine current slapuserX in instance

This user will need to be specified several times in configuration
files, as by default gitlab uses 'git' user and does "sudo" to it if it
is not current.

We will use {{ backend_info.user }} in the upcoming patches.

/cc @kazuhiko, @jerome

software/gitlab/instance-gitlab.cfg.in

@@ -47,6 +47,13 @@ cert    = ${slap-connection:cert-file}
 
 
 
+# for convenience
+[backend-info]
+# current slapuserX
+user    = {{ pwd.getpwuid(os.getuid())[0] }}
+
+
+
 #############################
 #   GitLab instance setup   #
 #############################
@@ -132,6 +139,7 @@ import-list =
 context =
     raw     autogenerated       # This file was autogenerated. (DO NOT EDIT - changes will be lost)
     section instance_parameter  instance-parameter
+    section backend_info        backend-info
     import  urlparse            urlparse
     ${:context-extra}
 context-extra =

software/gitlab/instance.cfg.in

@@ -20,6 +20,9 @@ mode    = 0644
 template= ${instance-gitlab.cfg.in:target}
 rendered= $${buildout:directory}/instance-gitlab.cfg
 context =
+    import os os
+    import pwd pwd
+
     key eggs_directory          buildout:eggs-directory
     key develop_eggs_directory  buildout:develop-eggs-directory
     raw gitlab_repository_location          ${gitlab-repository:location}