[ENSCORESW-2509]. Check correct handling of collection DBs, create/destroy collection DBs along the process.

Throw if features array is empty and moved checks to the top.

Added missing import

[ENSCORESW-2508]. Somehow (difficult to find exactly where) output is emitted without newline at the end, which is
then attached the result of the test, e.g. [last line of output]ok 17 ...
TAP fails because the parsed output is expecting the ok/not ok string at the beginning of the line.

bugfix: not all users require a password