Authentication fails if password contains colon character

[giulioturetta]

Choosing a password that contains the character ":" makes authentication failing. For instance, if the chosen password is "tictac:toe", install.sh script outputs:

Use the account information below to log into the Zope Management Interface
The account has full 'Manager' privileges.

  Username: admin
  Password: tictac

Files in zinstance folder contain the following credentials:

zinstance/.installed.cfg:user = admin:tictac:toe
zinstance/.installed.cfg:user = admin:tictac:toe
zinstance/adminPassword.txt:  Password: tictac
zinstance/buildout.cfg:user=admin:tictac:toe