Implementing K23237429

[olanystrom]

New feature idea. Error checking according to K23237429
K23237429: TCL error: ERR_NOT_SUPPORTED after upgrade to version 14.1.0 or later

After version 14.1.0 the new error 01220001:3: TCL error: /Common/<iRule_name> <HTTP_REQUEST> - ERR_NOT_SUPPORTED (line 1) invoked from within "HTTP::host" exist.

HTTP iRule commands that inspect HTTP state after the commands HTTP::respond, HTTP::redirect and HTTP::retry will now return errors instead of returning corrupt data.

Can testcl set HTTP::has_responded and return error if the iRule is trying to utilize HTTP context commands after already sending an HTTP response or redirect.