Merge #12293: [rpc] Mention that HD is enabled if hdmasterkeyid is present
Summary:
PR12293 backport https://github.com/bitcoin/bitcoin/pull/12293/files
c6b6385651 [rpc] Mention that HD is enabled if hdmasterkeyid is present (fanquake)
Pull request description:
Also adds optional flag. Replaces #12042
Test Plan:
make check
read
Reviewers: deadalnix, jasonbcox, Fabien, #bitcoin_abc
Reviewed By: deadalnix, #bitcoin_abc
Differential Revision: https://reviews.bitcoinabc.org/D3532