gitlab/gitlab.yml: Slapos'ify rest of it

Convert the rest of this configuration file to slapos.

It is straightforward conversion of parameters except:

    - access-via-ssh is disabled (gitlab slapos version does not support
      ssh access and supports HTTP(S) only by design on purpose)

    - we do not support restricting possible projects visibility via
      instance parameter (very low chance this will be needed in
      practice)

    - default issue-closing pattern is just ok for now and not
      configurable

    - support for builds, build artifacts & CI is disabled (we do not
      support CI (yet ?))

    - some internal defaults are just ok (e.g. where to organize
      directory for keeping repositories archives for downloads)

    - reply-by-email is not supported (yet ?)

    - we do not support LFS (yet ?) - just plain git hosting is ok for now.

    - Gravatar defaults are ok for now and not configurable.

    - Support for LDAP is disabled

    - Support for Kerberos is disabled

    - Support for OmniAuth is disabled

    - Satellites path is just /dev/null as we start from version where
      satellites are already non-existent.

    - Uploading backups to somewhere via GitLab's builtin mechanism is
      not supported - we'll use SlapOS native backup and resiliency for
      this.

    - Support for Google analytics is disabled.

    - Support for Piwik is disabled.

    - we are ok (for now) with default rack-attack git settings

/cc @kazuhiko, @jerome

software/gitlab/gitlab-parameters.cfg

@@ -18,6 +18,13 @@ configuration.db_pool                   = 10
 configuration.rate_limit_requests_per_period    = 10
 configuration.rate_limit_period                 = 60
 
+configuration.time_zone                 = UTC
+
+configuration.email_enabled             = true
+configuration.email_from                = lab@example.com
+configuration.email_display_name        = GitLab
+configuration.email_reply_to            = noreply@example.com
+
 configuration.smtp_enable               = true
 configuration.smtp_address              = smtp.server
 configuration.smtp_port                 = 465
@@ -30,6 +37,27 @@ configuration.smtp_enable_starttls_auto = true
 # none | peer | client_once | fail_if_no_peer_cert -> see gitlab-omnibus links at top
 configuration.smtp_openssl_verify_mode  = peer
 
+configuration.default_can_create_group  = true
+configuration.username_changing_enabled = true
+configuration.default_theme             = 2
+
+configuration.default_projects_features.issues          = true
+configuration.default_projects_features.merge_requests  = true
+configuration.default_projects_features.wiki            = true
+configuration.default_projects_features.snippets        = true
+# NOTE can be public|private|internal
+configuration.default_projects_features.visibility_level= public
+#configuration.default_projects_features.builds          = false
+
+configuration.webhook_timeout           = 10
+
+# 0 means forever (seconds)
+configuration.backup_keep_time          = 0
+
+# NOTE empty = default gitlab limits
+configuration.git_max_size              =
+configuration.git_timeout               =
+
 # unicorn advanced
 configuration.unicorn_worker_memory_limit_min   = 200*(1024**2)
 configuration.unicorn_worker_memory_limit_max   = 250*(1024**2)

software/gitlab/instance-gitlab.cfg.in

@@ -141,6 +141,7 @@ context =
     section instance_parameter  instance-parameter
     section backend_info        backend-info
     import  urlparse            urlparse
+    raw     git                 {{ git }}
     ${:context-extra}
 context-extra =
 
@@ -167,6 +168,10 @@ rendered= ${gitlab-shell:etc}/config.yml
 [gitlab.yml]
 <= gitlab-etc-template
 template= {{ gitlab_yml_in }}
+context-extra =
+    section gitlab                  gitlab
+    section gitlab_shell            gitlab-shell
+    section gitlab_shell_work       gitlab-shell-work
 
 [rack_attack.rb]
 <= gitlab-etc-template