Documentation for Ambassador CRDs uses underscores that fail validation

[suever]

Describe the bug
When attempting to use the Mapping CRD to associate a Service with ambassador using a metadata.name value with an underscore such as qotm_mapping (as shown in the documentation), validation fails because only lower-case alpha-numeric values, - or . are allowed in the name.

The exact error message is:

The Mapping "qotm_mapping" is invalid: metadata.name: Invalid value: "qotm_mapping": a DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is 'a-z0-9?(.a-z0-9?)*')

To Reproduce
Steps to reproduce the behavior:

1. Create a Mapping resource using the configuration provided in the documentation here
2. Attempt to deploy this configuration
3. See an error similar to the above
4. Replace the underscore with . or - and see the error resolve

Expected behavior
The documentation should be updated such that the names used for the mapping are valid values for metadata.name

Versions (please complete the following information):

• Ambassador: 0.70.0
• Kubernetes environment: Amazon EKS
• Version: 1.12.3

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[richarddli]

Not sure if this is still an issue, but if so, a documentation PR would be appreciated!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.