[TestInferiorAssert] Differentiate DWARF and DSYM tests with suffixes.

[sivachandra]

This is probably an obvious commit. Will wait for a day, just in case.

[clayborg]

Looks good.

test/functionalities/inferior-assert/TestInferiorAssert.py

class AssertingInferiorTestCase(TestBase):
     @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
     def test_inferior_asserting_python(self):
         """Test that lldb reliably catches the inferior asserting (Python API)."""
         self.buildDefault()
         self.inferior_asserting_python()
 
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
     @unittest2.expectedFailure("rdar://15367233")
-    def test_inferior_asserting_expr(self):
+    def test_inferior_asserting_expr_dsym(self):
         """Test that the lldb expression interpreter can read from the inferior after asserting (command)."""
         self.buildDsym()
         self.inferior_asserting_expr()
 
     @expectedFailurei386('llvm.org/pr17384: lldb needs to be aware of linux-vdso.so to unwind stacks properly')
     @unittest2.expectedFailure("rdar://15367233")
     @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
-    def test_inferior_asserting_expr(self):
+    def test_inferior_asserting_expr_dwarf(self):
         """Test that the lldb expression interpreter can read from the inferior after asserting (command)."""
         self.buildDwarf()
         self.inferior_asserting_expr()
 
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
     @unittest2.expectedFailure("rdar://15367233")
-    def test_inferior_asserting_step(self):
+    def test_inferior_asserting_step_dsym(self):
         """Test that lldb functions correctly after stepping through a call to assert()."""
         self.buildDsym()
         self.inferior_asserting_step()
 
     @expectedFailurei386("llvm.org/pr17384: lldb needs to be aware of linux-vdso.so to unwind stacks properly")
     @expectedFailureDarwin("rdar://15367233")
     @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
-    def test_inferior_asserting_step(self):
+    def test_inferior_asserting_step_dwarf(self):
         """Test that lldb functions correctly after stepping through a call to assert()."""
         self.buildDwarf()
         self.inferior_asserting_step()
 
     def set_breakpoint(self, line):
         lldbutil.run_break_set_by_file_and_line (self, "main.c", line, num_expected_locations=1, loc_exact=True)
 
     def check_stop_reason(self):