refactor vault role (#2733)

* Move front-proxy-client certs back to kube mount

We want the same CA for all k8s certs

* Refactor vault to use a third party module

The module adds idempotency and reduces some of the repetitive
logic in the vault role

Requires ansible-modules-hashivault on ansible node and hvac
on the vault hosts themselves

Add upgrade test scenario
Remove bootstrap-os tags from tasks

* fix upgrade issues

* improve unseal logic

* specify ca and fix etcd check

* Fix initialization check

bump machine size

roles/vault/tasks/cluster/unseal.yml

@@ -1,25 +1,16 @@
 ---
 
 - name: cluster/unseal | Current sealed state
-  debug: " Sealed? {{vault_is_sealed}}"
+  debug:
+    msg: "Sealed? {{ vault_is_sealed }}"
 
 - name: cluster/unseal | Unseal Vault
-  uri:
-    url: "https://localhost:{{ vault_port }}/v1/sys/unseal"
-    headers: "{{ vault_headers }}"
-    method: POST
-    body_format: json
-    body:
-      key: "{{ item }}"
+  hashivault_unseal:
+    url: "https://localhost:{{ vault_port }}/"
+    token: "{{ vault_root_token }}"
+    ca_cert: "{{ vault_cert_dir }}/ca.pem"
+    keys: "{{ item }}"
+  no_log: true
   with_items: "{{ vault_unseal_keys|default([]) }}"
+  notify: wait for vault up
   when: vault_is_sealed
-
-- name: cluster/unseal | Wait until server is ready
-  uri:
-    url: "https://localhost:{{ vault_port }}/v1/sys/health"
-    headers: "{{ vault_headers }}"
-    method: HEAD
-    status_code: 200, 429
-  register: vault_node_ready
-  until: vault_node_ready|succeeded
-  retries: 5