CSHARP-4714: Reset EC2 instance profile at end of test if necessary. (#1184)

Author: JamesKovacs

evergreen/evergreen.yml

@@ -959,6 +959,16 @@ functions:
           python bottle.py fake_azure:imds
 
   cleanup:
+    - command: shell.exec
+      params:
+        shell: "bash"
+        script: |
+          ${PREPARE_SHELL}
+          cd "${DRIVERS_TOOLS}/.evergreen/auth_aws"
+          if [ -f "./aws_e2e_setup.json" ]; then
+            . ./activate-authawsvenv.sh
+            python ./lib/aws_assign_instance_profile.py
+          fi
     - command: shell.exec
       params:
         script: |