This CR adds a new docker-compose-persist.yaml file which creates a
volume mount in the current directory at ./ledgers/<container> and binds
it to the ledger directory for the container.
It also adds a '-p' flag to the byfn.sh script to allow users to include
this new compose file when bringing up the network.
Change-Id: I1ee5faa33c7f0ce18fe7711f5f752d7bf18f117c
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>
Signed-off-by: Surya <suryalnvs@gmail.com>
