incorrect apt-cache setting in config.yaml

[Pradeep Kilambi]

The description of this setting says, to disable cache set it to false. But if you set it to false you end up with false being the hostname:

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en_US Unable to connect to false:3142:

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en Unable to connect to false:3142:

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en_US Unable to connect to false:3142:

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en Unable to connect to false:3142:

E: Some index files failed to download. They have been ignored, or old ones used instead.
E: Unable to locate package ubuntu-cloud-keyring

The only way to disable this setting today is to comment it out.

Either we need to fix the description or fix the logic to accept false.

[Pradeep Kilambi (pkilambi)]

fix pushed for review: https://review.openstack.org/63485