Put back legacy support for calico ippools and bgp settings

roles/network_plugin/calico/tasks/check.yml

@@ -22,6 +22,7 @@
         that:
           - calico_version_on_server.stdout|version_compare('v2.6.5', '>=')
         msg: "Your version of calico is not fresh enough for upgrade"
+      when: calico_upgrade_enabled
 
     - name: "Set upgrade flag when version needs to be updated"
       set_fact:

roles/network_plugin/calico/tasks/install.yml

 ---
-
 - name: Calico | Write Calico cni config
   template:
     src: "cni-calico.conflist.j2"
@@ -102,6 +101,25 @@
   run_once: true
   delegate_to: "{{ groups['kube-master'][0] }}"
   when:
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '>') or calico_upgrade_enabled
+    - 'calico_conf.stdout == "0"'
+
+- name: Calico | Configure calico network pool (legacy)
+  shell: >
+    echo '
+      { "kind": "ipPool",
+        "spec": {"disabled": false, "ipip": {"enabled": {{ ipip }}, "mode": "{{ ipip_mode|lower }}"},
+                 "nat-outgoing": {{ nat_outgoing|default(false) and not peer_with_router|default(false) }}},
+        "apiVersion": "v1",
+        "metadata": {"cidr": "{{ kube_pods_subnet }}"}
+      }' | {{ bin_dir }}/calicoctl apply -f -
+  environment:
+    NO_DEFAULT_POOLS: true
+  run_once: true
+  delegate_to: "{{ groups['kube-master'][0] }}"
+  when:
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
+    - not calico_upgrade_enabled
     - 'calico_conf.stdout == "0"'
 
 - name: "Determine nodeToNodeMesh needed state"
@@ -112,7 +130,6 @@
     - inventory_hostname in groups['k8s-cluster']
   run_once: yes
 
-
 - name: Calico | Set global as_num
   shell: >
     echo '
@@ -127,6 +144,24 @@
         "asNumber": {{ global_as_num }} }} ' | {{ bin_dir }}/calicoctl --skip-exists create -f -
   run_once: true
   delegate_to: "{{ groups['kube-master'][0] }}"
+  when:
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '>') or calico_upgrade_enabled
+
+- name: Calico | Set global as_num (legacy)
+  command: "{{ bin_dir}}/calicoctl config set asNumber {{ global_as_num }}"
+  run_once: true
+  when:
+   - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
+   - not calico_upgrade_enabled
+
+- name: Calico | Disable node mesh (legacy)
+  command: "{{ bin_dir }}/calicoctl config set nodeToNodeMesh off"
+  run_once: yes
+  when:
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
+    - not calico_upgrade_enabled
+    - nodeToMeshEnabled|default(True)
+  run_once: true
 
 - name: Calico | Configure peering with router(s)
   shell: >