Missing adaptation output when using IBIS-AMI model in GetWave mode.

[capn-freako]

Entering for @SJPan2019

Describe the bug
When using IBIS-AMI models in GetWave mode, the output from both Tx and Rx is empty.
I was expecting to see the adaptation behavior output, as I do when running in ADS.

To Reproduce
Steps to reproduce the behavior:

1. Use an IBIS-AMI model, which produces adaptive behavior output in ADS.
2. Run a PyBERT simulation, using this model.
3. View the console output and note that the adaptive behavior output is missing.

Expected behavior
The adaptive behavior output should be seen in the console frame.

Screenshots
(To be filled in by Shujun.)

Desktop (please complete the following information):

• OS: [e.g. Windows, Linux, or MacOS]
• Python Version [e.g. 3.7.4]
• PyBERT Version [e.g. 3.3.0]

Additional context
Add any other context about the problem here.

[SJPan2019]

Desktop:
OS: Windows 10
Python Version: 3.7.6 (Anaconda)
PyBERT Version: 3.3.2