fix(challenge): extend logs on commit stage

[cnlangzi]

Changes

• extended logs on challenge commit stage

Fixes

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• 0chain:
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

Merging #781 (412b1f0) into staging (9658eb1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           staging     #781   +/-   ##
========================================
  Coverage    24.40%   24.40%           
========================================
  Files           77       77           
  Lines         7829     7829           
========================================
  Hits          1911     1911           
  Misses        5651     5651           
  Partials       267      267           

Flag	Coverage Δ
Unit-Tests	24.40% <ø> (ø)

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[peterlimg]

lgtm