Would like broker config to be a symlink rather than file.
Would like broker config to be a link rather than an actual file
within init script parameter requirement. If system maintenance
results in a restart of the host (accidental or otherwise) the
default broker init will take over and expose the system (real
world ugly experience because config file wasn't a link). If
config always referenced a specific config file that was in turn
a link then there would explicit control over the mode of broker
operation. Variation would also be obvious from the command line
by looking at the link. Design thought would be to add
'setvariant' and 'clearvariant' p4broker init modes that adjusted
the config link based on a variant parameter. Or maybe just
'setvariant' with a built-in DEFAULT variant. A specific init
command seems cleaner than changing the link based on context.