tests/requirements.txt links to tests/requirements-2.12.txt, so Kubespray uses ansible 2.12 by default for testing. However we forgot to update testcases_prepare.sh to use ansible 2.12. This updates testcases_prepare to use ansible 2.12.
TEST_ID
KUBE_NETWORK_PLUGIN
PRIVATE_KEY_FILE
AWS_ACCESS_KEY
AWS_SECRET_KEY
AWS_AMI_ID
AWS_KEY_PAIR_NAME
AWS_SECURITY_GROUP
AWS_REGION
openssl pkcs12 -in gce-secure.p12 -passin pass:notasecret -nodes -nocerts | openssl rsa -out gce-secure.pem cat gce-secure.pem |base64 -w0 > GCE_PEM_FILE`