bootstrap: rework role (#4045)

* bootstrap: rework role

* support being called from a non-root user
* run some commands in check mode
* unify spelling/task names

* bootstrap: fix wording of comments for check_mode: false

* bootstrap: remove setup-pipelining task

roles/bootstrap-os/tasks/bootstrap-coreos.yml

@@ -1,5 +1,5 @@
 ---
-- name: Bootstrap | Check if bootstrap is needed
+- name: Check if bootstrap is needed
   raw: stat /opt/bin/.bootstrapped
   register: need_bootstrap
   environment: {}
@@ -14,7 +14,7 @@
   tags:
     - facts
 
-- name: Bootstrap | Run bootstrap.sh
+- name: Run bootstrap.sh
   script: bootstrap.sh
   when: need_bootstrap.rc != 0
 
@@ -23,13 +23,13 @@
   tags:
     - facts
 
-- name: Bootstrap | Install pip3
+- name: Install pip3
   command: "{{ ansible_python_interpreter }} -m ensurepip"
   args:
     creates: "{{ bin_dir }}/pypy3/bin/pip3"
   register: pip_installed
 
-- name: Bootstrap | Install pip3 link
+- name: Install pip3 link
   file:
     src: "{{ bin_dir }}/pypy3/bin/pip3"
     dest: "{{ bin_dir }}/pip3"
@@ -45,7 +45,7 @@
   environment:
     PATH: "{{ ansible_env.PATH }}:{{ bin_dir }}"
 
-- name: Bootstrap | Disable auto-upgrade
+- name: Disable auto-upgrade
   systemd:
     name: locksmithd.service
     masked: true