Add immutability to PVC subrole

1. Remove the obsolete pvc-vacuum script install.

2. Remove notifies when modifying configs; we do not want to restart the
daemons uncontrolled.

3. Add bootstrap check to package installs so they only happen on
bootstrap.

This ensures this part of the role, on re-runs, will *only* update
configs and not actually touch the running daemon. This makes it safe to
run before a oneshot/update-pvc-daemons.yml playbook run.

roles/pvc/tasks/pvc/main.yml

@@ -10,13 +10,12 @@
       - ethtool
       - jq
     state: latest
+  when: bootstrap is defined and bootstrap
 
 - name: install pvc node daemon configuration
   template:
     src: pvc/{{ item }}.j2
     dest: /etc/pvc/{{ item }}
-  notify:
-    - restart pvcnoded
   with_items:
     - pvcnoded.yaml
 
@@ -24,8 +23,6 @@
   template:
     src: pvc/{{ item }}.j2
     dest: /etc/pvc/{{ item }}
-  notify:
-    - restart pvcapid
   with_items:
     - pvcapid.yaml
 
@@ -55,12 +52,6 @@
   run_once: yes
   when: bootstrap is defined and bootstrap and is_coordinator
 
-- name: install daily vacuum script
-  template:
-    src: pvc/pvc-vacuum.j2
-    dest: /etc/cron.daily/pvc-vacuum
-    mode: 0755
-
 - meta: flush_handlers
 
 - name: ensure services are started and running