CY-2862 Downgrade to python 3.6 for windows
CY-2862 Downgrade to python 3.6 for windows

3.8 requires pika 1.1.0, which uses SSLContext so won't work with 2.6 (for RHEL/Centos 6 agents).

cloudify-cosmo/cloudify-agent,cloudify-cosmo/cloudify-agent