Change default Python version to 3.x

hosts

@@ -2,4 +2,4 @@
 foo.example.com
 
 [openbsd:vars]
-ansible_python_interpreter=/usr/local/bin/python2.7
+ansible_python_interpreter=/usr/local/bin/python3

prerequisite.yml

@@ -12,6 +12,6 @@
 
     - name: Install ansible's prerequisite
       # yamllint disable-line rule:line-length
-      raw: export PKG_PATH=http://ftp.eu.openbsd.org/pub/OpenBSD/$(uname -r)/packages/$(uname -p)/; pkg_add -z python-2
+      raw: export PKG_PATH=http://ftp.eu.openbsd.org/pub/OpenBSD/$(uname -r)/packages/$(uname -p)/; pkg_add -z python-3
 
 # vim:ft=ansible