Update calico-typha deployment to address v3.7.x changes (#5003)

* Update calico-typha deployment to address v3.7.x changes

So that calico-typha works for Calico v3.7.x.

* Apply changes for v3.7.x only.

roles/network_plugin/calico/templates/calico-typha.yml.j2

@@ -60,7 +60,6 @@ spec:
       # as a host-networked pod.
       serviceAccountName: calico-node
       containers:
-#      - image: calico/typha:v3.4.4
       - image: {{ calico_typha_image_repo }}:{{ calico_typha_image_tag }}
         name: calico-typha
         ports:
@@ -97,19 +96,33 @@ spec:
           # - name: USE_POD_CIDR
           #   value: "true"
         livenessProbe:
+{% if calico_version is version('v3.7.0', '<') %}
           exec:
             command:
             - calico-typha
             - check
             - liveness
+{% else %}
+          httpGet:
+            path: /liveness
+            port: 9098
+            host: localhost
+{% endif %}
           periodSeconds: 30
           initialDelaySeconds: 30
         readinessProbe:
+{% if calico_version is version('v3.7.0', '<') %}
           exec:
             command:
             - calico-typha
             - check
             - readiness
+{% else %}
+          httpGet:
+            path: /readiness
+            port: 9098
+            host: localhost
+{% endif %}
           periodSeconds: 10
 
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