Changes

tests/osmo-bts.vty: aligh with recent libosmovty changes

A new command was recently added to libosmovty:

  show fsm-state-graph NAME

This is now the longest command, affecting spacing in the output
of 'show ?' command.  Align spacing to make the test pass again.

Change-Id: I80f896e45a88550909c5767169286fc321a36e56
Related: libosmocore.git I09ee0a8c3fc4b1aa991ab5c93c0b654fccd7ea4c