List file support

[avanaur]

Changes

Support listing of file and not just directory.

The /v1/file/list/{allocation} now supports listing of a file. The result will be listing of its parent directory and only the file as result.

Fixes

Resolves #699

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: List file support system_test#306
• zboxcli: List file support zboxcli#267
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

Merging #730 (0b0e9e6) into staging (a2eaa88) will decrease coverage by 0.04%.
The diff coverage is 0.00%.

@@ Coverage Diff @@ ## staging #730 +/- ## =========================================== - Coverage 24.19% 24.15% -0.05%  =========================================== Files 69 69 Lines 7898 7913 +15 =========================================== Hits 1911 1911 - Misses 5703 5718 +15  Partials 284 284 

Flag	Coverage Δ
Unit-Tests	24.15% <0.00%> (-0.05%)	⬇️

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

Impacted Files	Coverage Δ
.../0chain.net/blobbercore/handler/storage_handler.go	23.77% <0.00%> (-0.44%)	⬇️

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[service-0chain]

Manual system tests [failure] with the following config

config	value
tests skipped	FALSE
system-tests	feature/list-file
gosdk	staging
zboxcli	feature/list-file
zwalletcli	staging
0chain	staging
blobber	feature/list-file
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	staging
0proxy	staging
0search	staging

[service-0chain]

Manual system tests [success] with the following config

config	value
tests skipped	FALSE
system-tests	feature/list-file
gosdk	staging
zboxcli	feature/list-file
zwalletcli	staging
0chain	staging
blobber	feature/list-file
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	staging
0proxy	staging
0search	staging

[peterlimg]

lgtm