Reset LogManager after each test method in LogManagerTest

Bug: 263064468
Test: atest CtsLibcoreTestCases:org.apache.harmony.logging.tests.java.util.logging.LogManagerTest
Merged-In: Ibc8d357b46713dccd21c090eecbe7608f8c5dff5
Change-Id: Ibc8d357b46713dccd21c090eecbe7608f8c5dff5
(cherry picked from commit 19594fe5976754d9e578c508a9717f6d1e623871)
1 file changed