allow to set a password for shares which where created without a password before the admin started to enforce the password
allow to set a password for shares which where created without a password before the admin started to enforce the password

Signed-off-by: Bjoern Schiessle <a31805f6001ab3b535ea95133fbc4db46e97e8d1@schiessle.org>

endsguy/server,michaelletzgus/nextcloud-server,nextcloud/server,pixelipo/server,nextcloud/server,pixelipo/server,endsguy/server,andreas-p/nextcloud-server,nextcloud/server,michaelletzgus/nextcloud-server,endsguy/server,nextcloud/server,endsguy/server,pixelipo/server,endsguy/server,pixelipo/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,pixelipo/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,michaelletzgus/nextcloud-server