Feat/download verify ct

[devyetii]

Changes

Fixes

Tests

Tasks to complete before merging PR:

• [ ] Ensure system tests are passing. If not Run them manually to check for any regressions :clipboard:
• [ ] 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 #1317 (b09092e) into sprint-1.11 (4edd89d) will decrease coverage by 0.04%. The diff coverage is 60.00%.

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@@               Coverage Diff               @@
##           sprint-1.11    #1317      +/-   ##
===============================================
- Coverage        23.73%   23.69%   -0.04%     
===============================================
  Files               86       87       +1     
  Lines            10042    10047       +5     
===============================================
- Hits              2383     2381       -2     
- Misses            7362     7369       +7     
  Partials           297      297              

Flag	Coverage Δ
Unit-Tests	23.69% <60.00%> (-0.04%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...chain.net/blobbercore/filestore/tree_validation.go	78.57% <ø> (ø)
....net/blobbercore/filestore/tree_validation_main.go	100.00% <100.00%> (ø)
...ode/go/0chain.net/blobbercore/filestore/storage.go	39.04% <0.00%> (-0.07%)	:arrow_down:
...et/blobbercore/handler/object_operation_handler.go	17.11% <50.00%> (+0.05%)	:arrow_up:

... and 1 file with indirect coverage changes