Example in readme does not work with default config

[Doug Chivers]

The example given in the readme to issue a certificate using the test CRL does not work because it fails network validation using the default config:

"Now generate a valid CSR
that should pass validation and check that it is issued, by specifying a
common name of 'anchor-test.example.com' when prompted:

    openssl req -text -newkey rsa:4096 -nodes \
    -out anchor-test.example.com.csr

    curl http://127.0.0.1:5000/sign -F user='woot' -F secret='woot' \
    -F encoding=pem -F 'csr=<anchor-test.example.com.csr'

If Anchor is correctly configured, the CA will return a certificate."

This fails the network validation stage for common_name:
2015-03-28 19:45:10,713 DEBUG [anchor.certificate_ops][94526/MainThread] validate_csr: checking default
2015-03-28 19:45:10,713 DEBUG [anchor.certificate_ops][94526/MainThread] _run_validator: checking common_name with args: {u'allowed_domains': [u'.example.com']}
2015-03-28 19:45:10,713 DEBUG [anchor.certificate_ops][94526/MainThread] _run_validator: checking common_name
2015-03-28 19:45:10,713 WARNI [anchor.validators][94526/MainThread] No valid network IP ranges were given, skipping
2015-03-28 19:45:10,713 DEBUG [anchor.certificate_ops][94526/MainThread] _run_validator: success

...

2015-03-28 19:45:10,714 DEBUG [anchor.certificate_ops][94526/MainThread] validate_csr: checking ip
2015-03-28 19:45:10,715 DEBUG [anchor.certificate_ops][94526/MainThread] _run_validator: checking common_name with args: {u'allowed_networks': [u'127.0.0.0/8']}
2015-03-28 19:45:10,715 DEBUG [anchor.certificate_ops][94526/MainThread] _run_validator: checking common_name
2015-03-28 19:45:10,715 ERROR [anchor.certificate_ops][94526/MainThread] _run_validator: validation failed Domain 'anchor-test.example.com' not allowed (doesn't match known domains (.example.com]) or networks(127.0.0.0/8))

[Tim Kelsey (tim-kelsey)]

OK, I have reproduced this. I will fix the default configuration.

[Stanislaw Pitucha (stanislaw-pitucha)]

I'm writing the new README / docs right now. I'll make sure the config is in line with the docs / getting started section.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/190503