use explicit CNI plugin versions (#1664)
use explicit CNI plugin versions (#1664)

* use explicit CNI plugin versions

* addressed comments

* addressed comments

rjtsdl/acs-engine,yangl900/acs-engine,Azure/acs-engine,rocketraman/acs-engine,weinong/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,anhowe/acs-engine,anhowe/acs-engine,rocketraman/acs-engine,weinong/acs-engine,weinong/acs-engine,shrutir25/acs-engine,Azure/acs-engine,shrutir25/acs-engine,rjtsdl/acs-engine,rocketraman/acs-engine,rjtsdl/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,shrutir25/acs-engine,yangl900/acs-engine,weinong/acs-engine,yangl900/acs-engine,rjtsdl/acs-engine,rocketraman/acs-engine,weinong/acs-engine,Azure/acs-engine,anhowe/acs-engine,anhowe/acs-engine,shrutir25/acs-engine,yangl900/acs-engine,Azure/acs-engine,shrutir25/acs-engine,anhowe/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,yangl900/acs-engine,jackfrancis/acs-engine