fix: change the wasm download URL to point to the envoy examples repository

[liorokman]

What this PR does / why we need it:
Envoy moved all their examples from the envoy repository to a new examples repository. The URL to the wasm example must be updated in the E2E tests.

envoyproxy/envoy@56be4f4

[liorokman]

@guydc @zhaohuabing I hope this will fix the E2E tests...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.61%. Comparing base (866a6ce) to head (b30d882).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4014      +/-   ##
==========================================
- Coverage   67.64%   67.61%   -0.03%     
==========================================
  Files         185      185              
  Lines       22578    22578              
==========================================
- Hits        15272    15267       -5     
- Misses       6213     6216       +3     
- Partials     1093     1095       +2     

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[liorokman]

/retest

[liorokman]

/retest

[zirain]

can we move https://github.com/envoyproxy/gateway/tree/main/examples/extension-server to that repo?

[liorokman]

can we move https://github.com/envoyproxy/gateway/tree/main/examples/extension-server to that repo?

I don't know. Good question. Does the Gateway project have any body to ask from the main Envoy project about this?

[zirain]

can we move https://github.com/envoyproxy/gateway/tree/main/examples/extension-server to that repo?

I don't know. Good question. Does the Gateway project have any body to ask from the main Envoy project about this?

I think we can try.

[guydc]

Thanks!