remove support for calico v2.x (#4974)

* Remove support for calico below version v3.0.0

Change-Id: If8fe3036b9e054901a8b2c48516eff1e1271970f

* Update main.yml

* fixup node peering

Change-Id: Ifac4d363deba826f0c80e390ce80a28df9827323

* fixups

Change-Id: Ic35417330af6741962003b3930604393c90804d1

* fixups

Change-Id: I0ea82d634bb0c81d9b7dc50569c70988bc8d3a3b