main/openrc: support rc_verbose variable in the networking service
From the default OpenRC configuration file:
# If you want verbose output for OpenRC, set this to yes. If you want
# verbose output for service foo only, set it to yes in /etc/conf.d/foo.
#rc_verbose=no
The rc_verbose
variable is also supported by other services, e.g.
/etc/init.d/local
. The setting is activated by default to remain
backwards compatible but can be disabled if desired.