renamed file to ml2.xlsx to remove space

Change-Id: I13498e737b358633e3a9655b7d92e424053e9f87
Signed-off-by: Ashlee Young <ashlee@wildernessvoice.com>

diff --git a/framework/docs/testcases/ONOSFW(ML2) Test Case.xlsx b/framework/docs/testcases/ml2.xlsx
similarity index 100%
rename from framework/docs/testcases/ONOSFW(ML2) Test Case.xlsx
rename to framework/docs/testcases/ml2.xlsx