GODRIVER-3631 Assume correct EC2 role in search index test task.

[matthewdale]

GODRIVER-3631

Summary

Call function assume-test-secrets-ec2-role and pass in the AWS creds in the test-search-index-task-group task group setup.

Background & Motivation

Currently the test-search-index Evergreen tasks all fail with an error like:

 Getting secrets: drivers/atlas-qa...
 Using Python binary /opt/python/Current/bin/python3
 Traceback (most recent call last):
   File "drivers-evergreen-tools/.evergreen/secrets_handling/setup_secrets.py", line 30, in get_secrets
...
     raise ValueError(
         "Please provide a profile (typically using AWS_PROFILE)"
     ) from e
 ValueError: Please provide a profile (typically using AWS_PROFILE)

The other Evergreen task that calls .evergreen/atlas/setup.sh also calls assume-test-secrets-ec2-role first.

[mongodb-drivers-pr-bot]

API Change Report

No changes found!