doc: add missing username/password options to commands

[binbin-li]

What?

Resovles #276

For commands other than notation login, we should allow them support username/password options even without first-time logging.
Since the login command requires credentialsStore set up which might be missing for users. So we cannot force users always use login to save credentials. Other commands should be able to use the credentials directly from input without credentialsStore set up.

Updated commands:

1. sign
2. push
3. pull
4. list
5. cache
6. verify

Signed-off-by: Binbin Li libinbin@microsoft.com

[codecov-commenter]

Codecov Report

Merging #293 (eebfa63) into main (b5b56e0) will decrease coverage by 30.42%.
The diff coverage is n/a.

❗ Current head eebfa63 differs from pull request most recent head 262cc16. Consider uploading reports for the commit 262cc16 to get more accurate results

@@             Coverage Diff             @@
##             main     #293       +/-   ##
===========================================
- Coverage   61.07%   30.64%   -30.43%     
===========================================
  Files           9       25       +16     
  Lines         280     1612     +1332     
===========================================
+ Hits          171      494      +323     
- Misses        102     1105     +1003     
- Partials        7       13        +6     

Impacted Files	Coverage Δ
cmd/notation/list.go	42.10% <0.00%> (ø)
cmd/notation/login.go	43.20% <0.00%> (ø)
cmd/notation/pull.go	18.68% <0.00%> (ø)
cmd/notation/logout.go	54.16% <0.00%> (ø)
cmd/notation/push.go	24.61% <0.00%> (ø)
cmd/notation/main.go	0.00% <0.00%> (ø)
cmd/notation/registry.go	0.00% <0.00%> (ø)
cmd/notation/key.go	23.52% <0.00%> (ø)
cmd/notation/plugin.go	0.00% <0.00%> (ø)
cmd/notation/cache.go	23.38% <0.00%> (ø)
... and 6 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[shizhMSFT]

LGTM

[dtzar]

It would be nice to add to the login section something like: "Once login is completed, then -u -p is no longer required for any notation commands against the registry server authenticated."

[dtzar]

@yizha1 - since this is just a doc fix and is now at the 1 week mark, I recommend merging it today before notation release.

[binbin-li]

It would be nice to add to the login section something like: "Once login is completed, then -u -p is no longer required for any notation commands against the registry server authenticated."

Good call, I'll add it.

[shizhMSFT]

LGTM