Enhance verify_sdp.sh to check for best practice configurables.
Values for key settings such as server.depot.root and journalPrefix
are already checked in the SDP. The SDP should go beyond these
key settings to check values for all best practice configurable
settings, including those defined in
* General settings set in configure_new_server.sh.
* Recommended settings suggested in configure_new_server.sh, e.g.
the security setting.
* Replication-related settings defined in mkrep.sh.
Among other things, this will specifically check that the auth.id
is set for the 'any' config, and also that rpl.forward.login=1 is
set for all server specs that represent p4d processes (i.e. all for
which the 'Type' field of the server spec is 'server', thus
ignoring 'broker', 'proxy', 'connector' and any new future server
types.