doc: Added regtest config for linearize script #17393

Updated the example-linearize.cfg file to include support for the regtest chain network config which is used by the ./linearize-data.py

Problem: Without the regtest magic, genesis hash and path config, the linearize-data.py script cannot generate a bootstrap.dat file.

Example:

./linearize-data.py ./linearize.cfg Read 102 hashes Genesis block not found in hashlist

Solution:

Added netmagic, genesis and input example parameters to file.

Resolution

1. Starting bitcoind in regtest mode
2. bitcoin-cli generatetoaddress 101 $(bitcoin-cli getnewaddress)
3. ./linearize-hashes.py ./linearize.cfg > ./hashlist.txt
4. ./linearize-data.py ./linearize.cfg

$ ./linearize-data.py ./linearize.cfg
Read 102 hashes
Input file /Users/gr0kchain/.bitcoin/regtest/blocks/blk00000.dat
Output file /Users/gr0kchain/Downloads/bootstrap.dat
Done (102 blocks written)

Concept ACK, but please improve your commit message from just "Updated config file".

Updated commit message as requested

Thanks, but now it's too long long, please stick to the "consisting of a short subject line (50 chars max), a blank line and explanatory text as separate paragraph(s)" format.

Please read https://github.com/bitcoin/bitcoin/blob/master/CONTRIBUTING.md especially "Contributor Workflow" and "Squashing Commits".

Thanks for the guidance, and apologies for the multi commit message updates, had some local config issues. Seems fine now with the updated log messages as per the documentation guidelines provided.

Also this: https://chris.beams.io/posts/git-commit/

ACK after squash.

Squashed the unnecessary noise and consolidated into a single commit with updated comment as per the guidelines

ACK 582e66b6e75d58033987a7b0474226cfdd724ce0