feat: allow to amend Atmosphere configuration (#1959) (CP: 1.4) #4304

Job	Run time
Build	1m 51s
Build	1m 51s
Test Java	2m 24s
Test Java	2m 24s
Test TypeScript	15m 13s
Test TypeScript	55s
ITs	0s
Tests Summary	1s
Tests Summary	1s
ITs (false, tests, 11)	5m 35s
ITs (true, tests, 11)	7m 3s
ITs (tests/spring/endpoints-latest-java, 17, false)	1m 7s
	38m 25s

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