rafs: do not include chunk info array in the metadata blob

[jiangliu]

Now we can reconstruct chunk info from RAFS v6 data blob with embedded chunk digest, so no need to embed the chunk info array in the metadata blob anymore, which helps to dramatically reduce size of metadata blob for big images.

[anolis-bot]

@jiangliu , a new test job has been submitted. Please wait in patience. The test job url: https://tone.openanolis.cn/ws/nrh4nnio/test_result/57322

[anolis-bot]

@jiangliu , the code has been updated, so a new test job has been submitted. Please wait in patience. The test job url: https://tone.openanolis.cn/ws/nrh4nnio/test_result/57324

[anolis-bot]

@jiangliu , The CI test is completed, please check result:

Test Case		Test Result
build rust golang image		✅ SUCCESS
compile nydusd		❌ FAIL

Sorry, your test job failed. Please get the details in the link.

[anolis-bot]

@jiangliu , The CI test is completed, please check result:

Test Case		Test Result
build rust golang image		✅ SUCCESS
compile nydusd		✅ SUCCESS
compile ctr remote		✅ SUCCESS
compile nydus snapshotter		✅ SUCCESS
run container with rafs		✅ SUCCESS
run container with zran		✅ SUCCESS
run container with rafs and compile linux		✅ SUCCESS

Congratulations, your test job passed!

[anolis-bot]

@adamqqqplay , the code has been updated, so a new test job has been submitted. Please wait in patience. The test job url: https://tone.openanolis.cn/ws/nrh4nnio/test_result/69235

[codecov]

Codecov Report

Merging #1157 (927f27f) into master (b937989) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1157      +/-   ##
==========================================
- Coverage   41.36%   41.35%   -0.01%     
==========================================
  Files         126      126              
  Lines       37336    37333       -3     
  Branches    37336    37333       -3     
==========================================
- Hits        15444    15440       -4     
- Misses      21157    21161       +4     
+ Partials      735      732       -3     

Impacted Files	Coverage Δ
rafs/src/builder/core/v6.rs	31.67% <0.00%> (+0.11%)	⬆️
src/bin/nydus-image/main.rs	40.91% <0.00%> (ø)

... and 2 files with indirect coverage changes

[anolis-bot]

@adamqqqplay , The CI test is completed, please check result:

Test Case		Test Result
build rust golang image		✅ SUCCESS
compile nydusd		✅ SUCCESS
compile ctr remote		✅ SUCCESS
compile nydus snapshotter		✅ SUCCESS
run container with rafs		✅ SUCCESS
run container with zran		✅ SUCCESS
run container with rafs and compile linux		✅ SUCCESS

Congratulations, your test job passed!

[adamqqqplay]

cargo-deny can be fixed in PR #1240

[adamqqqplay]

need rebase