fix #508 by checking for `.Values.nextcloud.existingSecret.tokenKey` #1054

Job	Run time
changes	6s
lint	33s
run-tests (Default - no custom values)	1m 48s
run-tests (PostgreSQL Enabled, --helm-extra-set-args "--set=postgresql.enabled=true --set=postgre...	2m 8s
run-tests (Nginx Enabled, --helm-extra-set-args "--set=image.flavor=fpm --set=nginx.enabled=true")	1m 45s
run-tests (Horizontal Pod Autoscaling Enabled, --helm-extra-set-args "--set=hpa.enabled=true --se...	1m 52s
summary	4s
	8m 16s

Provide feedback