Strip white spaces from start and end of user input

[corvus-ch]

Description

Whites aces from the beginning and the end of user input, should be removed.

Additional Context

This should be asserted on the API side but is not (https://ticket.vshn.net/browse/APUB-501). Before we change this, we would like the frontend to mitigate this up.

Logs

apiVersion: appuio.io/v1
kind: OrganizationMembers
metadata:
  […]
spec:
  userRefs:
  - name: ' ytelezhkin1'
  - name: dwestfield2
  - name: 'hekkel7 '
  - name: 'rdumbara'  
  […]

Expected Behavior

White spaces from the start and the beginning and end of user input should be removed.

apiVersion: appuio.io/v1
kind: OrganizationMembers
metadata:
  […]
spec:
  userRefs:
  - name: 'ytelezhkin1'
  - name: dwestfield2
  - name: 'hekkel7'
  - name: 'rdumbara'  
  […]

Steps To Reproduce

Entering data with a white space at the front and or the end.

[steffinchen]

@corvus-ch Should leading/trailing whitespaces automatically be removed, or the form field marked as invalid (and submitting not allowed)? I can see pro/cons for either: automatically removing them makes it easier for the user as they don't have to think about it, however can lead to confusion if they, for some reason, want a trailing whitespace, and it just disappears.

[corvus-ch]

Some values must be RFC 1123 and RFC 1035 compliant where leading and trailing are invalid. For the remaining values, having leading/trailing white spaces is confusing at best. So, I err on the side of just strait remove them.