Sink URI pattern is hardcoded to https while other protocols are allowed

[rkandoi]

In the Event Subscription Template, the URL pattern is hardcoded to HTTPS.

This seems incorrect as the URL may be different depending on the protocol chosen.

(

Commonalities/artifacts/camara-cloudevents/event-subscription-template.yaml

Line 283 in c7262f2

pattern: ^https:\/\/.+$

)

Please clarify if this understanding is correct. Thank you.

[rkandoi]

Perhaps required also for Fall25. cc: @rartych

[rartych]

@rkandoi You are rigth it is hardcoded now, the reason is
table in 2.2.3. Subscriptions data model says that for protocol attribute:
Only HTTP is allowed for now.

If we decide on other protocols (as already defined in the template) the pattern should be extended to cover them.
That is probably the topic for next meta-release.