Update the version of pypy used on CoreOS bootstrap-os (#3922)

* Update the version of pypy used on CoreOS bootstrap-os

* update the pip installation process on CoreOS

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

@@ -24,7 +24,7 @@
     - facts
 
 - name: Bootstrap | Check if we need to install pip
-  shell: "pip --version"
+  shell: "pip3 --version"
   register: need_pip
   failed_when: false
   changed_when: false
@@ -34,26 +34,14 @@
   environment:
     PATH: "{{ ansible_env.PATH }}:{{ bin_dir }}"
 
-- name: Bootstrap | Copy get-pip.py
-  copy:
-    src: get-pip.py
-    dest: ~/get-pip.py
-  when: need_pip.rc != 0
-
 - name: Bootstrap | Install pip
-  shell: "{{ansible_python_interpreter}} ~/get-pip.py"
-  when: need_pip.rc != 0
-
-- name: Bootstrap | Remove get-pip.py
-  file:
-    path: ~/get-pip.py
-    state: absent
+  shell: "{{ ansible_python_interpreter }} -m ensurepip"
   when: need_pip.rc != 0
 
 - name: Bootstrap | Install pip launcher
   copy:
     src: runner
-    dest: "{{ bin_dir }}/pip"
+    dest: "{{ bin_dir }}/pip3"
     mode: 0755
   when: need_pip.rc != 0
 
@@ -61,7 +49,7 @@
   pip:
     name: "{{ item }}"
     extra_args: "{{ pip_extra_args | default(omit) }}"
-  with_items: "{{pip_python_coreos_modules}}"
+  with_items: "{{ pip_python_coreos_modules }}"
   environment:
     PATH: "{{ ansible_env.PATH }}:{{ bin_dir }}"