how to train a custom object detection model ssd_mobilenet_v1_coco and ssd_inception_v2_coco on google colab tensorflow 1.15.2?

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• [ No] I am using the latest TensorFlow Model Garden release and TensorFlow 2.
• [ Yes] I am reporting the issue to the correct repository. (Model Garden official or research directory)
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1. The entire URL of the file you are using

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2. Describe the bug

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3. Steps to reproduce

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4. Expected behavior

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5. Additional context

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6. System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):google colab
• Mobile device name if the issue happens on a mobile device:
• TensorFlow installed from (source or binary):
• TensorFlow version (use command below):1.15.2
• Python version:3.6
• Bazel version (if compiling from source):
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Basically I have been trying to train a custom object detection model with ssd_mobilenet_v1_coco and ssd_inception_v2_coco on google colab tensorflow 1.15.2 using tensorflow object detection api. As soon as I start training it throws error for both the models respectively.

I also ran the python object_detection/builders/model_builder_tf1_test.py and it passed all the test without any errors or warnings.

ValueError: ssd_inception_v2 is not supported. See model_builder.py for features extractors compatible with different versions of Tensorflow.

ValueError: ssd_mobilenet_v1_coco is not supported. See model_builder.py for features extractors compatible with different versions of Tensorflow.

I have successfully changed the tensorflow to 1.15.2 by using below command this is my first step before installing any of the dependencies.

%tensorflow_version 1.x
import tensorflow
print(tensorflow.__version__)

When I checked the model_builder.py I can see that they still have support for ssd_mobilenet_v1 and ssd_inception_v2. I want to deploy my custom trained model ssd_mobilenet_v1 or ssd_inception_v2 on jetson tx2 by converting them into trt-tf models . In these 2 documents link1 and link2 we can see object detection models which can be converted to tf-trt models. So my question is how can I train these models as they are supported on google colab on tensorflow 1.15.2 and deploy on jetson txt for converting them to tf-trt models? Can anyone guide me through it would be really helpful to conitue my learning and learn something interesting thanks