[calico] clean up workarounds for older versions

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

@@ -13,7 +13,6 @@ rules:
       - configmaps
     verbs:
       - get
-{% if calico_version is version("v3.20.0", ">=") %}
   # EndpointSlices are used for Service-based network policy rule
   # enforcement.
   - apiGroups: ["discovery.k8s.io"]
@@ -22,7 +21,6 @@ rules:
     verbs:
       - watch
       - list
-{% endif %}
   - apiGroups: [""]
     resources:
       - endpoints

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

@@ -310,14 +310,12 @@ spec:
             requests:
               cpu: {{ calico_node_cpu_requests }}
               memory: {{ calico_node_memory_requests }}
-{% if calico_version is version('v3.21.0', '>=') %}
           lifecycle:
             preStop:
               exec:
                 command:
                 - /bin/calico-node
                 - -shutdown
-{% endif %}
           livenessProbe:
             exec:
               command:

roles/network_plugin/calico/templates/calicoctl.etcd.sh.j2

@@ -3,4 +3,4 @@ ETCD_ENDPOINTS={{ etcd_access_addresses }} \
 ETCD_CA_CERT_FILE={{ calico_cert_dir }}/ca_cert.crt \
 ETCD_CERT_FILE={{ calico_cert_dir }}/cert.crt \
 ETCD_KEY_FILE={{ calico_cert_dir }}/key.pem \
-{{ bin_dir }}/calicoctl {% if calico_version is version('v3.20.0', '>=') %}--allow-version-mismatch{% endif %} "$@"
+{{ bin_dir }}/calicoctl --allow-version-mismatch "$@"

roles/network_plugin/calico/templates/calicoctl.kdd.sh.j2

@@ -5,4 +5,4 @@ KUBECONFIG=/etc/kubernetes/admin.conf \
 {% else %}
 KUBECONFIG=/etc/cni/net.d/calico-kubeconfig \
 {% endif %}
-{{ bin_dir }}/calicoctl {% if calico_version is version('v3.20.0', '>=') %}--allow-version-mismatch{% endif %} "$@"
+{{ bin_dir }}/calicoctl --allow-version-mismatch "$@"