fix remaining lintian warnings for gitlab
W: gitlab source: missing-templates-pot
W: gitlab: init.d-script-has-unknown-lsb-keyword etc/init.d/gitlab:15 chkconfig
W: gitlab: script-not-executable usr/share/gitlab/Rakefile
W: gitlab: unusual-interpreter usr/share/gitlab/Rakefile #!rake
W: gitlab: script-not-executable usr/share/gitlab/bin/setup
W: gitlab: executable-not-elf-or-script usr/share/gitlab/lib/support/deploy/deploy.sh
W: gitlab: executable-not-elf-or-script etc/default/gitlab
W: gitlab: executable-not-elf-or-script usr/share/gitlab/lib/support/init.d/gitlab.default.example
W: gitlab: init.d-script-does-not-source-init-functions etc/init.d/gitlab