External database user configured

[Kempfu]

There is an issue with the inventory.j2 when the database group is empty.
It creates an inventory file looking like this:

[database]
_
_
o
m
i
t
_
p
l
a
c
e
_
h
o
l
d
e
r
_
_
d
f
0
5
7
2
e
9
4
e
0
9
9
a
e
f
a
b
4
5
e
5
e
f
b
d
4
b
e
1
b
1
6
7
b
f
1
0
f
d

Commenting, or changing the database variable in install_app.yml will inevitably lead to undefined variables errors.
Only other option is to change the inventory.j2 template.