Sync config files from nextcloud/docker repo; Add S3/Swift object storage config; Add S3 ci test; Add `nextcloud.trustedDomains` #1050

Job	Run time
changes	5s
lint	32s
test (Default - no custom values)	1m 39s
test (PostgreSQL Enabled, --helm-extra-set-args "--set=postgresql.enabled=true --set=postgresql.g...	2m 16s
test (Nginx Enabled, --helm-extra-set-args "--set=image.flavor=fpm --set=nginx.enabled=true")	1m 43s
test (Horizontal Pod Autoscaling Enabled, --helm-extra-set-args "--set=hpa.enabled=true --set=hpa...	1m 51s
test (S3 Enabled as Primary Storage, --namespace nextcloud --skip-clean-up --helm-extra-set-args ...	1m 45s
summary	5s
	9m 56s

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