add timeout parameter for HTTP client in Azure Log Analytics and Prometheus scalers

[zroubalik]

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Relates kedacore/keda#6607

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[rickbrouwer]

Is it maybe a good idea to adjust the warning message here (https://keda.sh/docs/2.16/operate/cluster/#http-timeouts) to clarify that it is possible to override it for some scalers

[zroubalik]

Is it maybe a good idea to adjust the warning message here (https://keda.sh/docs/2.16/operate/cluster/#http-timeouts) to clarify that it is possible to override it for some scalers

you are right! I wanted to do that and forgot about that.

[rickbrouwer]

A small nit. It is milliseconds instead of miliseconds.

[zroubalik]

A small nit. It is milliseconds instead of miliseconds.

lol, thanks a ton!