Fix "filename too long" issue on Luci caused by test name

Stop including fields in the test name for TestJavaSdkLibraryEnforce to
reduce its length to avoid the filename too long limit.

Test: m nothing
      Check the lengths before (~240) and after (~74) to make sure
      there was a sizeable reduction.
Change-Id: I275a1110e5102b8ea8376759f28c7c6333a5efee