Temporarily @Ignore flaky CommitCommandTest methods

Change-Id: Ia2c42d014323bd29b85bf76f1a20c83f612406d7

org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CommitCommandTest.java

 import org.eclipse.jgit.treewalk.TreeWalk;
 import org.eclipse.jgit.treewalk.filter.TreeFilter;
 import org.eclipse.jgit.util.FS;
+import org.junit.Ignore;
 import org.junit.Test;
 
 /**
 		}
 	}
 
+	@Ignore("very flaky when run with Hudson")
 	@Test
 	public void commitUpdatesSmudgedEntries() throws Exception {
 		try (Git git = new Git(db)) {
 		}
 	}
 
+	@Ignore("very flaky when run with Hudson")
 	@Test
 	public void commitIgnoresSmudgedEntryWithDifferentId() throws Exception {
 		try (Git git = new Git(db)) {