feat: merge ranged request storage into parent

[jim3ma]

Signed-off-by: Jim Ma [email protected]

Description

In previous prefetch PR #1503, ranged request and parent request are split into 2 peer task and 2 storage cache.
In this PR, we merge them into only one storage cache.

With this feature, we can support nydusd to invoke daemon grpc to download partial blobs with final target path. nydusd did not need to save network data info file. The underlay file is only one copy via sharing inode in same filesystem.

Motivation and Context

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist:

• Code compiles correctly.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #1078 (390a903) into main (252a748) will decrease coverage by 0.51%.
The diff coverage is 35.20%.

@@            Coverage Diff             @@
##             main    #1078      +/-   ##
==========================================
- Coverage   45.83%   45.31%   -0.52%     
==========================================
  Files         129      130       +1     
  Lines        9543     9904     +361     
==========================================
+ Hits         4374     4488     +114     
- Misses       4675     4891     +216     
- Partials      494      525      +31     

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	45.31% <35.20%> (-0.52%)	⬇️

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

Impacted Files	Coverage Δ
client/config/dfget.go	20.77% <ø> (ø)
client/config/peerhost.go	35.29% <ø> (ø)
client/daemon/daemon.go	5.41% <ø> (ø)
client/dfget/dfget.go	13.18% <0.00%> (-0.23%)	⬇️
pkg/source/httpprotocol/http_source_client.go	63.00% <ø> (ø)
client/daemon/storage/storage_manager.go	18.55% <26.26%> (-0.66%)	⬇️
client/daemon/storage/local_storage_subtask.go	29.26% <29.26%> (ø)
client/daemon/storage/local_storage.go	28.78% <40.62%> (+6.23%)	⬆️
client/daemon/rpcserver/rpcserver.go	31.89% <42.85%> (-1.75%)	⬇️
client/daemon/peer/peertask_stream.go	64.78% <50.00%> (+0.50%)	⬆️
... and 7 more

[gaius-qi]

LGTM

[jim3ma]

Implement for #1050