Enhance lldb-mi arguments test (MI)

SUMMARY:
Add additional arguments to lldb-mi args tests to make sure arguments with quotes are handled correctly.

Reviewers: ki.stfu
Subscribers: lldb-commits
Test Plan:
    ./dotest.py --executable lldb -f MiInterpreterExecTestCase.test_lldbmi_settings_set_target_run_args_before
    ./dotest.py --executable lldb -f MiInterpreterExecTestCase.test_lldbmi_settings_set_target_run_args_after
Differential Revision: http://reviews.llvm.org/D10523

llvm-svn: 240325