Add redeployment and external-access docs #845

Job	Run time
Integration Test / Get runner image / Get runner image	4s
Integration Test / Build and push charm	1m 47s
Integration Test / Build image / Get images	5s
Integration Test / Build rock / Get rocks	6s
Integration Test / Build image / Build image	0s
Integration Test / Build rock / Build rock (wordpress_rock)	1m 33s
Integration Test / Get rocks or Docker images	1s
Integration Test / Integration tests / Integration tests (test_addon)	9m 54s
Integration Test / Integration tests / Integration tests (test_core)	9m 20s
Integration Test / Integration tests / Integration tests (test_external)	8m 35s
Integration Test / Integration tests / Integration tests (test_ingress)	10m 25s
Integration Test / Integration tests / Integration tests (test_cos_grafana)	9m 26s
Integration Test / Integration tests / Integration tests (test_cos_loki)	10m 44s
Integration Test / Integration tests / Integration tests (test_cos_prometheus)	10m 15s
Integration Test / Required Integration Test Status Checks	1s
	1h 12m 16s

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