This commit adjusts the JIRA references such that we introduced a new jira-url
Ascidoc attribute which now points to issues.redhat.com rather than using full
url references across all pages to the same host.
When the connector detects that its configuration explicitly specifies
that "key.converter" or "value.converter" are using the AvroConverter,
the "sanitize.field.names" option will be automatically enabled.
