[libvirt] [jenkins-ci PATCH 3/7] guests: Install Python 3 during bootstrap

[Andrea Bolognani]

Almost all our target operating systems have a version
of Python 3 which is recent enough (>= 3.5) to be used
by Ansible available.

In fact, almost all of them have it pre-installed, which
makes installing Python 2 in addition to it just to use
Ansible, when Ansible itself would be absolutely happy
running on Python 3, quite silly.

Signed-off-by: Andrea Bolognani <abologna at redhat.com>
---
 guests/playbooks/update/tasks/bootstrap.yml | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/guests/playbooks/update/tasks/bootstrap.yml b/guests/playbooks/update/tasks/bootstrap.yml
index d7abb86..f2b40e0 100644
--- a/guests/playbooks/update/tasks/bootstrap.yml
+++ b/guests/playbooks/update/tasks/bootstrap.yml
@@ -4,17 +4,32 @@
   when:
     - package_format == 'pkg'
 
+- set_fact:
+    python: python3
+
+- set_fact:
+    python: python2
+  when:
+    - os_name == 'CentOS'
+    - os_version == '7'
+
+- set_fact:
+    python: python
+  when:
+    - os_name == 'Debian'
+    - os_version == '8'
+
 - name: Bootstrap Ansible
-  raw: yum install -y python2
+  raw: 'yum install -y {{ python }}'
   when:
     - package_format == 'rpm'
 
 - name: Bootstrap Ansible
-  raw: apt-get install -y python
+  raw: 'apt-get install -y {{ python }}'
   when:
     - package_format == 'deb'
 
 - name: Bootstrap Ansible
-  raw: pkg install -y python2
+  raw: 'pkg install -y {{ python }}'
   when:
     - package_format == 'pkg'
-- 
2.19.2