Sync config files from nextcloud/docker repo; Add S3/Swift object storage config; Add S3 ci test; Add `nextcloud.trustedDomains` #1026

Job	Run time
changes	6s
lint	42s
run-tests (Default - no custom values)	1m 41s
run-tests (PostgreSQL Enabled, --helm-extra-set-args "--set=postgresql.enabled=true --set=postgre...	2m 21s
run-tests (Nginx Enabled, --helm-extra-set-args "--set=image.flavor=fpm --set=nginx.enabled=true")	1m 41s
run-tests (Horizontal Pod Autoscaling Enabled, --helm-extra-set-args "--set=hpa.enabled=true --se...	1m 46s
run-tests (S3 Enabled as Primary Storage, --skip-clean-up --helm-extra-set-args "--set=nextcloud....	6m 3s
summary	4s
	14m 24s

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