Currently, balance-transfer does not have anchor peer
configuration. As a result, users are unable to use private data
and can't take advantage of service discovery.
This CR adds a function and modifies a test script to update
anchor peers at the setup.
Change-Id: Icbd7e4eb2e3bbcb187a083e94c616ef4825c5fb4
Signed-off-by: Yuki Kondo <yuki.kondo@hal.hitachi.com>
