alertmanager: add alertmanager_args to initd/confd
Many alertmanager options are only configurable at the command line.
alertmanager: correct daemon path
alertmanager: checkpath to ensure storage dir
The last commit was a red herring, the actual problem is that the
storage dir was not there.
alertmanager: remove storage path option
This was a copy+paste error from prometheus.
alertmanager: normalize initd/confd
Move prometheus packages into main repo
prometheus: checkpath on log files
Update prometheus, alertmanager init scripts
Normalize alertmanager package
prometheus/alertmanager: new APKBUILD