remove scheme field in nydusd config

[imeoer]

remove scheme field in nydusd config

We have implemented automatically scheme detect for nydusd in this PR:

dragonflyoss/nydus#893 (comment)

So we can remove the default scheme field in nydusd config file.

[codecov-commenter]

Codecov Report

Base: 33.11% // Head: 33.02% // Decreases project coverage by -0.09% ⚠️

Coverage data is based on head (40c5bd4) compared to base (dba3aaf).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #268      +/-   ##
==========================================
- Coverage   33.11%   33.02%   -0.10%     
==========================================
  Files          29       29              
  Lines        3122     3122              
==========================================
- Hits         1034     1031       -3     
- Misses       1980     1983       +3     
  Partials      108      108              

Impacted Files	Coverage Δ
pkg/blob/blob_manager.go	29.59% <0.00%> (-3.07%)	⬇️

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[changweige]

Seems no logic changes in this change set?

[liubogithub]

Looks good for the 1st commit.

[changweige]

We need to discuss the arrangement of currently scattered documents. I am inclining to merge this change until the nydusd (v2.2) including automatically changing HTTP scheme is released which means it can actually be used.

[changweige]

Needs rebase. Can we only submit the changes for reference nydusd config file in this PR and clean up the docs in the next step?

[imeoer]

Needs rebase. Can we only submit the changes for reference nydusd config file in this PR and clean up the docs in the next step?

Ok, let's move forward first.