playbook: convert vm-bootstrap scripts to python3

Also make vm-bootstrap role depends on python3

playbook/roles/vm-bootstrap/files/file_cmp

-#!/usr/bin/python
+#!/usr/bin/python3
 
 import os
 import sys
@@ -6,7 +6,7 @@ import sys
 if __name__ == "__main__":
 
   if len(sys.argv) < 4:
-    print "Use: %s FILE1 FILE2 DEST_FILE" % sys.argv[0]
+    print("Use: %s FILE1 FILE2 DEST_FILE" % sys.argv[0])
     exit(1)
 
   file1 = sys.argv[1]

playbook/roles/vm-bootstrap/files/format_hosts

-#!/usr/bin/python
+#!/usr/bin/python3
 
 import sys
 
-print sys.argv[1:]
+print(sys.argv[1:])
 
 host_content = open('/etc/hosts', 'r').read()
 hpath = sys.argv[1]
@@ -13,7 +13,7 @@ for content in open(hpath, 'r').readlines():
   if content:
     items = content.strip().split(' ')
     entry = "%s  %s.%s %s" % (items[1], items[0], domain, items[0])
-    print entry
+    print(entry)
     if not entry in host_content:
       lines_entry += entry + "\n"
 

playbook/roles/vm-bootstrap/files/ping

-#!/usr/bin/python
+#!/usr/bin/python3
 
 import os
 import sys
@@ -24,9 +24,9 @@ def ping_cluster(hpath):
 if __name__ == "__main__":
 
   if len(sys.argv) < 3:
-    print "Use: %s TYPE [HOST LIST] OR [HOST-FILE]" % sys.argv[0]
-    print "ex: %s host google.com slapos.org; %s cluster /tmp/hosts" % (
-                                        sys.argv[0], sys.argv[0])
+    print("Use: %s TYPE [HOST LIST] OR [HOST-FILE]" % sys.argv[0])
+    print("ex: %s host google.com slapos.org; %s cluster /tmp/hosts" % (
+                                        sys.argv[0], sys.argv[0]))
     exit(1)
   if sys.argv[1] == 'host':
     check_ping(sys.argv[2:])

playbook/roles/vm-bootstrap/meta/main.yml

+---
+dependencies:
+  - { role: package, package_name: python3, package_state: present }