fix(webui): set sane timeout for get_instances_data calls

Summary

• fix(http_server): consider timeout for establishin TCP connections in HTTP server

Due to the bug in RPC (see #991) RPC call timeout does not account TCP connection establishment. So a request to a peer without a connection was not aborted due to timeout. Force a timeout directly for a future returned by RPC to avoid this

Closes #991

• fix(webui): set sane timeout for get_instances_data calls

Previously webUI failed to retrieve data about instances if one of those was dead. The cause was that webUI HTTP request timeout was less than get_instances_data timeout.

References #943 (closed)

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• Close #...
• Cherry-pick to: none
• Docs follow-up: not necessary

changed milestone to %24.6 - Plugins and Tiers

assigned to @vifley

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• 35a7b87b - fix(http_server): consider timeout for establishin TCP connections in HTTP server

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• b428a536 - 1 commit from branch master
• 53a71ddc - fix(webui): set sane timeout for get_instances_data calls
• 08f4892c - fix(http_server): consider timeout for establishin TCP connections in HTTP server

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enabled an automatic merge when the pipeline for 08f4892c succeeds

aborted the automatic merge because target branch was updated

added 3 commits

• 0ed17263 - 1 commit from branch master
• 8de53aef - fix(webui): set sane timeout for get_instances_data calls
• 0785fa25 - fix(http_server): consider timeout for establishin TCP connections in HTTP server

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enabled an automatic merge when the pipeline for 0785fa25 succeeds

merged