Fix duplicate testcase filename

dotest.py started reporting:
	Exception: Found multiple tests with the name TestSampleTest.py
After the commit of:
	https://reviews.llvm.org/D54056

llvm-svn: 346089

diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/dont_allow_jit/TestSampleTest.py b/lldb/packages/Python/lldbsuite/test/expression_command/dont_allow_jit/TestAllowJIT.py
similarity index 100%
rename from lldb/packages/Python/lldbsuite/test/expression_command/dont_allow_jit/TestSampleTest.py
rename to lldb/packages/Python/lldbsuite/test/expression_command/dont_allow_jit/TestAllowJIT.py