Feature/ Challenge based on rounds

[Jayashsatolia403]

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 #1226 (a775f65) into sprint-1.11 (46eecde) will increase coverage by 0.00%. The diff coverage is 25.80%.

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@@             Coverage Diff              @@
##           sprint-1.11    #1226   +/-   ##
============================================
  Coverage        25.53%   25.54%           
============================================
  Files               84       84           
  Lines             9360     9385   +25     
============================================
+ Hits              2390     2397    +7     
- Misses            6674     6691   +17     
- Partials           296      297    +1     

Flag	Coverage Δ
Unit-Tests	25.54% <25.80%> (+<0.01%)	:arrow_up:

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

Files Changed	Coverage Δ
...de/go/0chain.net/blobbercore/allocation/workers.go	0.00% <0.00%> (ø)
...o/0chain.net/validatorcore/storage/handler_main.go	0.00% <0.00%> (ø)
.../0chain.net/validatorcore/storage/stats_handler.go	3.44% <0.00%> (-0.61%)	:arrow_down:
code/go/0chain.net/blobbercore/handler/handler.go	59.73% <60.00%> (+<0.01%)	:arrow_up:
...et/validatorcore/storage/challenge_handler_main.go	66.66% <62.50%> (-33.34%)	:arrow_down: