gitlab: Add xz-utils on path

For reasons similar to in 788e9e94 (gitlab: Fix 500 when downloading
archive.tar.gz and archive.tar.bz2) only now to support archive.tar.xz

software/gitlab/instance-gitlab.cfg.in

@@ -534,7 +534,7 @@ command-line    = {{ gitlab_workhorse }}
 #   - ruby to be available on path  (gitlab-workhorse -> gitlab-shell -> hooks  on push)
 #   - gitconfig be found from ~/.gitconfig
 environment =
-    PATH={{ git_location }}/bin:{{ ruby_location }}/bin:{{ gzip_location }}/bin:{{ bzip2_location}}/bin
+    PATH={{ git_location }}/bin:{{ ruby_location }}/bin:{{ gzip_location }}/bin:{{ bzip2_location}}/bin:{{ xz_location }}/bin
     HOME=${directory:home}
 
 depend  =

software/gitlab/instance.cfg.in

@@ -49,6 +49,7 @@ context =
     raw redis_binprefix             ${redis28:location}/bin
     raw ruby_location               ${bundler-4gitlab:ruby-location}
     raw watcher_sigkill             ${watcher-sigkill:rendered}
+    raw xz_location                 ${xz-utils:location}
 
 # config files
     raw config_ru_in                ${config.ru.in:target}

software/gitlab/software.cfg

@@ -20,6 +20,7 @@ extends =
     ../../component/gzip/buildout.cfg
     ../../component/dcron/buildout.cfg
     ../../component/logrotate/buildout.cfg
+    ../../component/xz-utils/buildout.cfg
 
 parts =
     ruby2.1
@@ -193,7 +194,7 @@ eggs    =
 recipe  = slapos.recipe.template
 url     = ${:_profile_base_location_}/instance.cfg.in
 output  = ${buildout:directory}/instance.cfg
-md5sum  = e5e7ddede71265987bb0c534b009aa45
+md5sum  = 1f8b3321e507efd2333952be22caac93
 
 [watcher-sigkill]
 recipe  = slapos.recipe.template:jinja2
@@ -251,7 +252,7 @@ md5sum  = 043804b76affe91a0bd3686f93f80ac8
 
 [instance-gitlab.cfg.in]
 <= download-file
-md5sum  = 0e7c13b5a5a3ad8748a79eea177b0ce3
+md5sum  = 5df8d0538f44f3dada2cfd5eb58536eb
 
 [macrolib.cfg.in]
 <= download-file