Fix/readmarker issues

[lpoli]

Changes

Use client id and allocation id as composite primary key to distinguish readmarker for allocation by client.
Modify readmarker retrieving query for redeeming.
Request latest readmarker to chain if record is not found locally.

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: Use allocation id to make readmarker key 0chain#2266
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[peterlimg]

LGTM

[peterlimg]

@lpoli please fix UT

[dabasov]

lgtm

[codecov-commenter]

Codecov Report

Merging #1019 (bb3ae61) into staging (827e6e7) will not change coverage.
The diff coverage is 100.00%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@           Coverage Diff            @@
##           staging    #1019   +/-   ##
========================================
  Coverage    27.73%   27.73%           
========================================
  Files           77       77           
  Lines         8091     8091           
========================================
  Hits          2244     2244           
  Misses        5556     5556           
  Partials       291      291           

Flag	Coverage Δ
Unit-Tests	27.73% <100.00%> (ø)

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

Impacted Files	Coverage Δ
...et/blobbercore/handler/object_operation_handler.go	30.93% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.