change convention for populating default name values during enrollment

The proposed convention for version 3.1 is

Note that names are treated specially, since they have multiple components. The specified variable will be appended with _HONORIFIC, _GIVEN, _MIDDLE, _FAMILY, or _SUFFIX to generate the variable name for the appropriate component. For example, if the variable name ENV_OIS_NAME is specified, ENV_OIS_NAME_GIVEN will be used for the first/given name.

This will not work with mod_auth_openidc and standard OIDC claims given_name and family_name.

If the convention where changed to

The specified variable will be appended with _honorific, _given_name, _family_name, or _suffix to generate...

then the convention would work with mod_auth_openidc and the standard claims given_name and family_name. 

Deployers using Shibboleth or SimpleSAMLphp have more flexibility in how SAML attributes asserted are set in the Apache environment and should be able to adapt to this convention, but mod_auth_openidc does not have a way to change the name of the standard claims. It only allows the prefix to be set with the default prefix being OIDC_.