Only install pvcapid on coordinators

There should be no reason for the API to be installed on non-coordinator
hosts, so separate it out.

oneshot/update-pvc-daemons.yml

@@ -1,4 +1,5 @@
 ---
+# Set the cluster into maintenance mode
 - hosts: all
   remote_user: deploy
   become: yes
@@ -15,6 +16,28 @@
       run_once: yes
       ignore_errors: yes
 
+# Run the PVC daemon role against the system (update pvc.conf)
+- hosts: all
+  remote_user: deploy
+  become: yes
+  become_user: root
+  gather_facts: yes
+  tasks:
+    - set_fact:
+        this_node: "{{ inventory_hostname.split('.')[0] }}"
+
+    - set_fact:
+        is_coordinator: "{% for node in pvc_nodes if node.hostname == this_node %}{{ node.is_coordinator }}{% endfor %}"
+
+    - set_fact:
+        new_host: no
+
+    - name: import PVC daemon role
+      include_role:
+        name: pvc
+        tasks_from: pvc/main.yml
+
+# Install the latest PVC packages & restart daemons to apply
 - hosts: all
   remote_user: deploy
   become: yes
@@ -92,6 +115,7 @@
       become: no
       connection: local
 
+# Set the cluster out of maintenance mode
 - hosts: all
   remote_user: deploy
   become: yes

roles/pvc/tasks/pvc/main.yml

@@ -1,19 +1,28 @@
 ---
-- name: install pvc packages
+- name: install pvc packages (all)
   apt:
     name:
       - pvc-daemon-node
       - pvc-daemon-health
       - pvc-daemon-worker
-      - pvc-daemon-api
       - pvc-daemon-common
       - pvc-client-cli
       - ethtool
       - jq
-      # default provisioner script helper programs
+    state: present
+  register: apt_res
+  retries: 5
+  until: apt_res is success
+
+- name: install pvc packages (coordinators only)
+  apt:
+    name:
+      - pvc-daemon-api
+      # default provisioner script helper programs (pvcworkerd)
       - debootstrap
       - rinse
     state: present
+  when: is_coordinator
   register: apt_res
   retries: 5
   until: apt_res is success