create separate options files for network plugins

remove plugin options from common files

inventory/sample/group_vars/k8s-cluster/k8s-net-calico.yml

@@ -0,0 +1,15 @@
+# see roles/network_plugin/calico/defaults/main.yml
+
+# Enables Internet connectivity from containers
+# nat_outgoing: true
+
+# add default ippool name
+# calico_pool_name: "default-pool"
+
+# Global as_num (/calico/bgp/v1/global/as_num)
+# global_as_num: "64512"
+
+# You can set MTU value here. If left undefined or empty, it will
+# not be specified in calico CNI config, so Calico will use built-in
+# defaults. The value should be a number, not a string.
+# calico_mtu: 1500