etc/login.defs: enable CREATE_HOME

In order to have consistent behaviour among all distributions, the same
configuration needs to be shared. That is why we are going to use the
`etc/login.defs` file and enable CREATE_HOME so that the home dir is
created automatically. This is not the default configuration used in all
distributions, but it is the most common one.

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>

etc/login.defs

@@ -440,7 +440,7 @@ USERGROUPS_ENAB yes
 # This option is overridden with the -M or -m flags on the useradd(8)
 # command-line.
 #
-#CREATE_HOME     yes
+CREATE_HOME     yes
 
 #
 # Force use shadow, even if shadow passwd & shadow group files are