[calico] don't enable ipip encapsulation by default and use vxlan in CI (#8434)

* [calico] make vxlan encapsulation the default

* don't enable ipip encapsulation by default
* set calico_network_backend by default to vxlan
* update sample inventory and documentation

* [CI] pin default calico parameters for upgrade tests to ensure proper upgrade

* [CI] improve netchecker connectivity testing

* [CI] show logs for tests

* [calico] tweak task name

* [CI] Don't run the provisioner from vagrant since we run it in testcases_run.sh

* [CI] move kube-router tests to vagrant to avoid network connectivity issues during netchecker check

* service proxy mode still fails connectivity tests so keeping it manual mode

* [kube-router] account for containerd use-case

tests/files/packet_debian10-calico-upgrade-once.yml

@@ -12,3 +12,11 @@ etcd_deployment_type: docker
 
 # Make docker happy
 docker_containerd_version: latest
+
+# Pin disabling ipip mode to ensure proper upgrade
+ipip: false
+calico_vxlan_mode: Always
+calico_network_backend: bird
+
+# Needed to bypass deprecation check
+ignore_assert_errors: true

tests/files/packet_debian10-calico-upgrade.yml

@@ -6,3 +6,11 @@ mode: default
 # Docker specific settings:
 container_manager: docker
 etcd_deployment_type: docker
+
+# Pin disabling ipip mode to ensure proper upgrade
+ipip: false
+calico_vxlan_mode: Always
+calico_network_backend: bird
+
+# Needed to bypass deprecation check
+ignore_assert_errors: true

tests/files/vagrant_centos7-kube-router.rb

@@ -0,0 +1,15 @@
+$num_instances = 2
+$vm_memory ||= 2048
+$os = "centos"
+
+$kube_master_instances = 1
+$etcd_instances = 1
+
+# For CI we are not worried about data persistence across reboot
+$libvirt_volume_cache = "unsafe"
+
+# Checking for box update can trigger API rate limiting
+# https://www.vagrantup.com/docs/vagrant-cloud/request-limits.html
+$box_check_update = false
+
+$network_plugin = "kube-router"

tests/files/vagrant_fedora35-kube-router.rb

@@ -0,0 +1,15 @@
+$num_instances = 2
+$vm_memory ||= 2048
+$os = "fedora35"
+
+$kube_master_instances = 1
+$etcd_instances = 1
+
+# For CI we are not worried about data persistence across reboot
+$libvirt_volume_cache = "unsafe"
+
+# Checking for box update can trigger API rate limiting
+# https://www.vagrantup.com/docs/vagrant-cloud/request-limits.html
+$box_check_update = false
+
+$network_plugin = "kube-router"

tests/files/vagrant_ubuntu16-kube-router-sep.rb

@@ -0,0 +1,15 @@
+$num_instances = 2
+$vm_memory ||= 2048
+$os = "ubuntu1604"
+
+$kube_master_instances = 1
+$etcd_instances = 1
+
+# For CI we are not worried about data persistence across reboot
+$libvirt_volume_cache = "unsafe"
+
+# Checking for box update can trigger API rate limiting
+# https://www.vagrantup.com/docs/vagrant-cloud/request-limits.html
+$box_check_update = false
+
+$network_plugin = "kube-router"

tests/files/vagrant_ubuntu16-kube-router-svc-proxy.rb

@@ -0,0 +1,10 @@
+$os = "ubuntu1604"
+
+# For CI we are not worried about data persistence across reboot
+$libvirt_volume_cache = "unsafe"
+
+# Checking for box update can trigger API rate limiting
+# https://www.vagrantup.com/docs/vagrant-cloud/request-limits.html
+$box_check_update = false
+
+$network_plugin = "kube-router"