Failed to Parse login form with IdentityProvider: PingFederate

## Driver version
Amazon Redshift ODBC Driver (x64) v2.00.00.03

## Redshift version
PostgreSQL 8.0.2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3), Redshift 1.0.46523

## Client Operating System
Win 10

## Problem description
Cannot connect to Redshift cluster using pingfed saml integration and plugin PingFederate.
1. Expected behaviour: User is authenticated, and connection is established.
2. Actual behaviour: Error message received.
3. Error message/stack trace: Connection failed (HY000): [Redshift][ODBC Driver][Server][860:8:IAMConnectionError]: Failed to parse login form.
4. Any other details that can be helpful: Same connection works with very old ODBC version 1.3.7.1000 but has other issues with external schemas and data shares.

Begin by reproducing the report on Windows 10 with driver v2.00.00.03, PingFederate SAML integration, and the Redshift connection details provided. Compare that result with the working v1.3.7.1000 driver to isolate the regression; done means the login form parses and the connection succeeds without the HY000/860:8:IAMConnectionError.

Written by the indexing model from the issue text.