fix VTY tests to expect well-formed output of logging configuration

In libosmocore Change-Id Ia75c7067284ea225cffe13ca71bad05a7747ae66
we fixed the generation (saving) of logging configuration to use
one level of indent, rather than the previous broken implementation
with two levels of indent.  This means we have to adjust the VTY
test expectations here.

Change-Id: I9282a59bbfad4cfc86e86c1212c74cccfe187ff8
1 file changed