AWS-k8s-tester requesting color logs when setting AWS_K8S_TESTER_EKS_LOG_COLOR=false

[couralex6]

We are getting an Error code 1 with the following message, even when setting AWS_K8S_TESTER_EKS_LOG_COLOR=false

{"level":"info","ts":"2021-04-26T16:56:22.041Z","caller":"eks/eks.go:181","msg":"set up log writer and file","outputs":["stderr","/home/ssm-user/actions-runner/actions-runner/_work/amazon-vpc-cni-k8s/amazon-vpc-cni-k8s/scripts/cni-test/cluster-cni-test-23280/cni-test-23280.log"]}
{"level":"warn","ts":"2021-04-26T16:56:22.043Z","caller":"eks/eks.go:190","msg":"requested output in color but not supported; overriding","output":"tput: terminal attributes: No such device or address","error":"exit status 1"}

This is breaking the AWS VPC CNI github action pipeline since our script is built to fail when seeing an Error Code 1.