PHASE 1 - Add Packet-CI playbook and configuration (#4537)

tests/cloud_playbooks/roles/packet-ci/templates/inventory.j2

@@ -0,0 +1,54 @@
+[all]
+{% for instance in vms.results %}
+instance-{{ loop.index }} ansible_ssh_host={{instance.stdout}}
+{% endfor %}
+
+{% if mode is defined and mode in ["separate", "separate-scale"] %}
+[kube-master]
+instance-1
+
+[kube-node]
+instance-2
+
+[etcd]
+instance-3
+{% elif mode is defined and mode in ["ha", "ha-scale"] %}
+[kube-master]
+instance-1
+instance-2
+
+[kube-node]
+instance-3
+
+[etcd]
+instance-1
+instance-2
+instance-3
+{% elif mode == "default" %}
+[kube-master]
+instance-1
+
+[kube-node]
+instance-2
+
+[etcd]
+instance-1
+{% elif mode == "aio" %}
+[kube-master]
+instance-1
+
+[kube-node]
+instance-1
+
+[etcd]
+instance-1
+
+[vault]
+instance-1
+{% endif %}
+
+[k8s-cluster:children]
+kube-node
+kube-master
+
+[fake_hosts]