Changes

pySim-shell_test/utils: print logfile on all types of errors

When pySim-shell has problems starting up, it exits with an error
code. This is detected by the testsuite, but it also causes an
early exit, so that the log file content are not printed.

Change-Id: Ic0f34eda32a7c557810abcb05a84e343741fdb8a