python2 is end of life and SONiC is going to support python3. This PR is going to support: 1. Mellanox SONiC platform API python3 support 2. Install both python2 and python3 verson of Mellanox SONiC platform API or pmon and host side
Signed-off-by: Nazarii Hnydyn <nazariig@mellanox.com>