OsTest: Reformat according to 4-space indent "AndroidStyle 4".

This CL was created via Code / Reformat Code (Ctrl+Alt+L) in
IntelliJ. Note that the reformatting also introduced newlines
(including empty lines) and other whitespace.

Test: atest CtsLibcoreTestCases:libcore.android.system.OsTest
Test: Confirmed that the following steps resulted in no net
      changes to the commit:
      git checkout HEAD^ luni/src/test/java/libcore/android/system/OsTest.java
      re-run Code / Reformat Code
Change-Id: Iba672674cd14793de82641f34ca55bb55f5cdb39
1 file changed