Provide address flag for admin dashboard command

[avinashupadhya99]

Closes #7891

The only issue with this implementation is that the server that is created after the dashboard server also uses the same address for listening. In the above netstat output, the server running on port 45633 also uses 0.0.0.0. In the previous implementation, every server runs on localhost.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).

[codecov]

Codecov Report

Merging #8095 (8d351bf) into master (4a55b13) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #8095      +/-   ##
==========================================
- Coverage   41.53%   41.51%   -0.02%     
==========================================
  Files         174      174              
  Lines       22703    22712       +9     
==========================================
  Hits         9430     9430              
- Misses      11932    11941       +9     
  Partials     1341     1341              

Impacted Files	Coverage Δ
cmd/argocd/commands/admin/dashboard.go	0.00% <0.00%> (ø)
cmd/argocd/commands/headless/headless.go	3.48% <0.00%> (-0.13%)	⬇️
cmd/argocd/commands/root.go	2.08% <0.00%> (ø)
server/application/application.go	32.65% <0.00%> (-0.13%)	⬇️

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[avinashupadhya99]

Are the docs auto-generated? Should I revert my commit of changing the docs?

[alexmt]

Thank you for PR @avinashupadhya99 ! Looks good to me.

Yes, CLI docs are autogenerated. Please run make clidocsgen to regenerate them and PR it good to go.

[alexmt]

LGTM. Thank you!