Deprecate httpProtocol: "Disabled" in config-network

[nak3]

Part of #417

/cc @ZhiminXiang

Release Note

"Disabled" for httpProtocol in config-network is deprecated.

[codecov]

Codecov Report

Merging #528 (3971e13) into main (c2191da) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #528   +/-   ##
=======================================
  Coverage   95.43%   95.43%           
=======================================
  Files          37       37           
  Lines         788      788           
=======================================
  Hits          752      752           
  Misses         25       25           
  Partials       11       11           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c2191da...3971e13. Read the comment docs.

[dprotaso]

/lgtm
/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, nak3

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [dprotaso,nak3]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment