fix(blobber): rename Used with Allocated

[cnlangzi]

Fixes

Changes

• renamed Used with Allocation on blobber node
• fixed Used for storage that is actually used by the client

Need to be mentioned in CHANGELOG.md?

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: fix(blobber): fixed Used/Allocated 0chain#1370
• blobber: fix(blobber): fixed Used/ Allocated blobber#720
• gosdk: fix(blobber): fixed Used/Allocated gosdk#485
• system_test: fix(blobber): fixed Used/Allocated system_test#294
• zboxcli: fix(blobber): rename Used with Allocated #255
• zwalletcli: fix(blobber): fixed Used/Allocated zwalletcli#142
• zboxmobile: https://github.com/0chain/zboxmobile/pull/44

[service-0chain]

Manual system tests [failure] with the following config

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

[peterlimg]

lgtm