Add upgrade tests for lz4 and snappy compressed 2.2 commit logs

patch by Branimir Lambov; reviewed by Aleksey Yeschenko for
CASSANDRA-9790

test/data/legacy-commitlog/2.2-lz4/hash.txt

@@ -0,0 +1,5 @@
+#CommitLog upgrade test, version 2.2.0-SNAPSHOT
+#Wed Jul 29 19:21:31 EEST 2015
+cells=6052
+hash=1274136076
+cfid=dc32ce20-360d-11e5-826c-afadad37221d

test/data/legacy-commitlog/2.2-snappy/hash.txt

@@ -0,0 +1,5 @@
+#CommitLog upgrade test, version 2.2.0-SNAPSHOT
+#Wed Jul 29 19:22:01 EEST 2015
+cells=6051
+hash=881633109
+cfid=ee2fe860-360d-11e5-951c-afadad37221d

test/data/legacy-commitlog/2.2/hash.txt

@@ -0,0 +1,5 @@
+#CommitLog upgrade test, version 2.2.0-SNAPSHOT
+#Wed Jul 29 19:20:21 EEST 2015
+cells=6366
+hash=-802535821
+cfid=b28a7000-360d-11e5-ae92-afadad37221d

test/unit/org/apache/cassandra/db/commitlog/CommitLogUpgradeTest.java

@@ -68,6 +68,24 @@ public class CommitLogUpgradeTest
         testRestore(DATA_DIR + "2.1");
     }
 
+    @Test
+    public void test22() throws Exception
+    {
+        testRestore(DATA_DIR + "2.2");
+    }
+
+    @Test
+    public void test22_LZ4() throws Exception
+    {
+        testRestore(DATA_DIR + "2.2-lz4");
+    }
+
+    @Test
+    public void test22_Snappy() throws Exception
+    {
+        testRestore(DATA_DIR + "2.2-snappy");
+    }
+
     @BeforeClass
     static public void initialize() throws FileNotFoundException, IOException, InterruptedException
     {