Without creating /var/lib/snapserver the services fails to start with
the following error message:
Exception: failed to create settings directory: "/var/lib/snapserver/": 13
Because the snapcast process itself tries to create the directory but
doesn't run as root and therefore gets an EACCESS (13) error.
While at it I also specified the pidfile created by the snapcast
process. No idea how OpenRC was even able to track the service status
without it.
use depends instead of install_is since there only was a single
condition for install_if.
Fix the unintended circular depends of snapcast-client ->
snapcast-server -> snapcast-client by reset depends in subpkg function.
PR https://github.com/alpinelinux/aports/pull/4541 removed the check()
function entirely. However, we didn't establish a clear policy yet
regarding what to do when upstream doesn't proved a test suite.
Therefore I will just leave check() as is even though I consider this to
be somewhat useless.
