docs(installation): updated k8s and helm+pokeshop guide #6447

Job	Run time
WebUI unit tests	2m 1s
API Server unit tests	2m 50s
Agent unit tests	1m 9s
Build docker image	5m 55s
config-e2e	1s
CLI unit tests	29s
CLI smoke tests (local)	43s
Tracetesting API Server (InMemory)	4m 6s
CLI smoke tests (docker)	45s
CLI e2e tests (8, 0)	1m 28s
WebUI End-to-end tests (1)	2m 38s
CLI e2e tests (8, 1)	1m 21s
WebUI End-to-end tests (2)	2m 38s
Test examples (collector)	41s
WebUI End-to-end tests (3)	2m 38s
CLI e2e tests (8, 2)	1m 31s
Tracetesting API Server (NATS)	3m 54s
Test examples (tracetest-jaeger)	39s
WebUI End-to-end tests (4)	2m 44s
CLI e2e tests (8, 3)	1m 21s
Test examples (tracetest-opensearch)	7m 26s
WebUI End-to-end tests (5)	3m 43s
CLI e2e tests (8, 4)	1m 32s
Test examples (tracetest-tempo)	40s
WebUI End-to-end tests (6)	2m 39s
CLI e2e tests (8, 5)	2m 40s
Test examples (tracetest-provisioning-env)	46s
WebUI End-to-end tests (7)	2m 50s
CLI e2e tests (8, 6)	1m 26s
WebUI End-to-end tests (8)	2m 42s
CLI e2e tests (8, 7)	3m 35s
	1h 9m 31s

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