setup.py: install bash completion scripts to proper location

The proper location to install bash completion scripts is
/usr/share/bash-completion/completions, use this directory instead of
/etc/bash_completion.d directly.

Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

setup.py

@@ -148,8 +148,8 @@ def run(self):
     package_data={"virtme.guest": package_files},
     data_files=[
         ("/etc", ["cfg/virtme-ng.conf"]),
-        ("/etc/bash_completion.d", ["virtme-ng-prompt"]),
-        ("/etc/bash_completion.d", ["vng-prompt"]),
+        ("/usr/share/bash-completion/completions", ["virtme-ng-prompt"]),
+        ("/usr/share/bash-completion/completions", ["vng-prompt"]),
     ],
     scripts=[
         "bin/virtme-prep-kdir-mods",