Custom post-receive hook inclusion

Created by: netdata-be

Gitlab overwrites the already existent post-receive hook to update the gitlab projects.

However I currently use this hook for custom code as well. Therefore it would be better to use an include dir as documented for the "update.secondary.d" dir

So do the following steps:

• Create a directory ~/.gitolite/hooks/common/post-receive.secondary.d
• Overwrite the post-receive hook with the following content:

#!/bin/bash

[ -d hooks/post-receive.secondary.d ] || exit 0

# all output from these "hooklets" must go to STDERR to avoid confusing the client
exec >&2

for i in hooks/post-receive.secondary.d/*
do
    [ -x "$i" ] || continue
    # call the hooklet with the same arguments we got
    "$i" "$@"   || {
        # hooklet failed; we need to log it...
        echo hooklet $i failed
        perl -I$GL_BINDIR -Mgitolite -e "log_it('hooklet $i failed')"
        # ...and send back some non-zero exit code ;-)
        exit 1
    }
done

exit 0

• Place the actual required code for updating gitlab into the directory ~/.gitolite/hooks/common/update.secondary.d

This makes it possible to just include custom hooks.