rename --stop-at-epoch flag to --debug-stop-at-epoch (#5361)

beacon_chain/conf.nim

@@ -364,7 +364,7 @@ type
         hidden
         desc: "The wall-time epoch at which to exit the program. (for testing purposes)"
         defaultValue: 0
-        name: "stop-at-epoch" .}: uint64
+        name: "debug-stop-at-epoch" .}: uint64
 
       stopAtSyncedEpoch* {.
         hidden
@@ -959,7 +959,7 @@ type
     stopAtEpoch* {.
       desc: "A positive epoch selects the epoch at which to stop"
       defaultValue: 0
-      name: "stop-at-epoch" .}: uint64
+      name: "debug-stop-at-epoch" .}: uint64
 
     payloadBuilderEnable* {.
       desc: "Enable usage of beacon node with external payload builder (BETA)"

beacon_chain/conf_light_client.nim

@@ -155,7 +155,7 @@ type LightClientConf* = object
     hidden
     desc: "The wall-time epoch at which to exit the program. (for testing purposes)"
     defaultValue: 0
-    name: "stop-at-epoch" .}: uint64
+    name: "debug-stop-at-epoch" .}: uint64
 
 template databaseDir*(config: LightClientConf): string =
   config.dataDir.databaseDir

scripts/launch_local_testnet.sh

@@ -220,7 +220,7 @@ while true; do
       ;;
     --stop-at-epoch)
       STOP_AT_EPOCH=$2
-      STOP_AT_EPOCH_FLAG="--stop-at-epoch=$2"
+      STOP_AT_EPOCH_FLAG="--debug-stop-at-epoch=$2"
       shift 2
       ;;
     --disable-htop)