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/shared/pki_mount.yml

@@ -1,27 +1,12 @@
 ---
-- name: "shared/mount | Test if {{ pki_mount_path }} PKI mount exists"
-  uri:
-    url: "{{ vault_leader_url }}/v1/sys/mounts/{{ pki_mount_path }}/tune"
-    headers: "{{ vault_headers }}"
-  ignore_errors: true
-  register: vault_pki_mount_check
 
-- name: shared/mount | Set pki mount type
-  set_fact:
-    mount_options: "{{ pki_mount_options | combine({'type': 'pki'}) }}"
-  when: vault_pki_mount_check|failed
-
-- name: shared/mount | Mount {{ pki_mount_path }} PKI mount if needed
-  uri:
-    url: "{{ vault_leader_url }}/v1/sys/mounts/{{ pki_mount_path }}"
-    headers: "{{ vault_headers }}"
-    method: POST
-    body_format: json
-    body: "{{ mount_options|d() }}"
-    status_code: 204
-  when: vault_pki_mount_check|failed
-
-- name: shared/mount | Unset mount options
-  set_fact:
-    mount_options: {}
-  when: vault_pki_mount_check|failed
+- name: shared/mount | Enable {{ pki_mount_path }} PKI mount
+  hashivault_secret_enable:
+    url: "{{ vault_leader_url }}"
+    token: "{{ vault_root_token }}"
+    ca_cert: "{{ vault_cert_dir }}/ca.pem"
+    name: "{{ pki_mount_path }}"
+    backend: "pki"
+    config: "{{ pki_mount_options }}"
+  register: secret_enable_result
+  failed_when: 'secret_enable_result.rc !=0 and "existing mount" not in secret_enable_result.msg'