Merge pull request #3227 from mirwan/contiv121

docs/contiv.md

inventory/sample/group_vars/all/all.yml

roles/download/defaults/main.yml

...kubernetes-apps/network_plugin/contiv/tasks/configure.yml

roles/kubernetes-apps/network_plugin/contiv/tasks/main.yml

roles/kubespray-defaults/defaults/main.yaml

roles/network_plugin/contiv/defaults/main.yml

roles/network_plugin/contiv/files/contiv-cleanup.sh

roles/network_plugin/contiv/tasks/main.yml

roles/network_plugin/contiv/tasks/pre-reset.yml

roles/network_plugin/contiv/tasks/reset.yml

...s/network_plugin/contiv/templates/contiv-api-proxy.yml.j2

roles/network_plugin/contiv/templates/contiv-cleanup.yml.j2

roles/network_plugin/contiv/templates/contiv-config.yml.j2

.../network_plugin/contiv/templates/contiv-etcd-proxy.yml.j2

...ugin/contiv/templates/contiv-netmaster-clusterrole.yml.j2

...s/network_plugin/contiv/templates/contiv-netmaster.yml.j2

...s/network_plugin/contiv/templates/contiv-netplugin.yml.j2

roles/network_plugin/contiv/templates/contiv-ovs.yml.j2

roles/reset/tasks/main.yml