feat: enable checkpoint sync for devnets (#448)

src/cl/lighthouse/lighthouse_launcher.star

@@ -382,6 +382,11 @@ def get_beacon_config(
                 )
             )
     elif network not in constants.PUBLIC_NETWORKS:
+        cmd.append(
+            "--checkpoint-sync-url=https://checkpoint-sync.{0}.ethpandaops.io".format(
+                network
+            )
+        )
         cmd.append(
             "--boot-nodes="
             + shared_utils.get_devnet_enrs_list(

src/cl/lodestar/lodestar_launcher.star

@@ -339,13 +339,18 @@ def get_beacon_config(
                     )
                 )
         else:  # devnet
+            cmd.append(
+                "--checkpointSyncUrl=https://checkpoint-sync.{0}.ethpandaops.io".format(
+                    network
+                )
+            )
             cmd.append(
                 "--bootnodes="
                 + shared_utils.get_devnet_enrs_list(
                     plan, el_cl_genesis_data.files_artifact_uuid
                 )
             )
-    else:
+    else:  # public testnet
         cmd.append("--network=" + network)
         cmd.append("--checkpointSyncUrl=" + constants.CHECKPOINT_SYNC_URL[network])
 

src/cl/prysm/prysm_launcher.star

@@ -342,6 +342,11 @@ def get_beacon_config(
                     cmd.append("--peer=" + ctx.multiaddr)
                     cmd.append("--bootstrap-node=" + ctx.enr)
         else:  # Devnet
+            cmd.append(
+                "--checkpoint-sync-url=https://checkpoint-sync.{0}.ethpandaops.io".format(
+                    network
+                )
+            )
             cmd.append(
                 "--bootstrap-node="
                 + shared_utils.get_devnet_enr(

src/cl/teku/teku_launcher.star

@@ -392,6 +392,11 @@ def get_beacon_config(
                 )
             )
     elif network not in constants.PUBLIC_NETWORKS:
+        cmd.append(
+            "--checkpoint-sync-url=https://checkpoint-sync.{0}.ethpandaops.io".format(
+                network
+            )
+        )
         cmd.append(
             "--p2p-discovery-bootnodes="
             + shared_utils.get_devnet_enrs_list(