Virtualhost of nextcloud must accept only FQDN

[stephdl]

Steps to reproduce

• install nextcloud on NS8
• configure it with a hostname like foo
• enable the toggle of lets encrypt
• no error, everything is fine

Expected behavior

I expect to receive a a lets encrypt certificate for nextcloud

Actual behavior

The certificate won't never happen because they validate the FQDN of the requester before to create it, foo is not a FQDN or a domain name. We should require a FQDN or a domain name

Components

nextcloud:1.1.4

[stephdl]

QA

• install nextcloud from ghcr.io/nethserver/nextcloud:1.1.5-dev.2
• configure it with a hostname like foo
• it must be refused and we should have a validation error
• configure it with a hostname like !?foo
• it must be refused and we should have a validation error
• configure a valid fqdn or domain name
• it must be accepted

[nrauso]

tested: VERIFIED
All QA cases are correctly managed.

[stephdl]

released as ghcr.io/nethserver/nextcloud:1.1.5