[CELEBORN-1759] Fix reserve slots might lost partition location betwe…

…en 0.4 client and 0.5 server

### What changes were proposed in this pull request?
Fix the worker parses `ReserveSlots` logic for compatibility

### Why are the changes needed?
When upgrading to 0.5, the 0.4 client reserves slots for the 0.5 worker. If there is only a replicate location, the worker parses abnormally, causing the actual reserve to fail, but returns success to the client.
The worker log "Reserved 0 primary location and 0 replica location" appears.

### Does this PR introduce _any_ user-facing change?
When upgrading to 0.5 from 0.4, fix potential reserve slot failure scenario.(only replica location).

### How was this patch tested?
Manual test.

Closes #2968 from onebox-li/fix-reserve-compatibility.

Authored-by: onebox-li <[email protected]>
Signed-off-by: mingji <[email protected]>

common/src/main/scala/org/apache/celeborn/common/protocol/message/ControlMessages.scala

@@ -1271,7 +1271,7 @@ object ControlMessages extends Logging {
         val pbReserveSlots = PbReserveSlots.parseFrom(message.getPayload)
         val userIdentifier = PbSerDeUtils.fromPbUserIdentifier(pbReserveSlots.getUserIdentifier)
         val (primaryLocations, replicateLocations) =
-          if (pbReserveSlots.getPrimaryLocationsList.isEmpty) {
+          if (pbReserveSlots.getPrimaryLocationsList.isEmpty && pbReserveSlots.getReplicaLocationsList.isEmpty) {
             PbSerDeUtils.fromPbPackedPartitionLocationsPair(
               pbReserveSlots.getPartitionLocationsPair)
           } else {