Feature: brownout deprecated API features via enable_brownout flag (#… #3317

Job	Run time
Build frontend e2e test image	34s
Build backend e2e test image	38s
lint_core	14s
Build frontend unit test image	55s
Lint mwdb-core web sources	42s
Build mwdb-core core image	43s
Build mwdb-core web image	1m 11s
Perform frontend unit tests	31s
Perform backend e2e tests	2m 41s
Perform frontend e2e tests	2m 0s
Push test images on Docker Hub	1m 29s
Push images on Docker Hub	2m 5s
	13m 43s

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