Continue upgrade after pcapengine is changed to SURICATA

Instead of exiting and requiring the user to rerun the script after
changing pcapengine to SURICATA, let the script continue to the
version check and upgrade.

salt/manager/tools/sbin/soupto3

@@ -75,15 +75,17 @@ prompt_change_engine() {
             read -rp " Continue with changing pcapengine to SURICATA? (y/N): " CONFIRM_CHANGE
             if [[ ! "$CONFIRM_CHANGE" =~ ^[Yy]$ ]]; then
                 pcapengine_not_changed
-                return
+                return 1
             fi
         fi
         echo ""
         echo " Updating pcapengine to SURICATA..."
         so-yaml.py replace /opt/so/saltstack/local/pillar/global/soc_global.sls global.pcapengine SURICATA
-        echo " Done. Please run this script again to continue the upgrade."
+        echo " Done."
+        return 0
     else
         pcapengine_not_changed
+        return 1
     fi
 }
 
@@ -107,10 +109,10 @@ case "$PCAP_ENGINE" in
         echo ""
 
         prompt_delete_pcap
-        prompt_change_engine "$PCAP_ENGINE"
-
-        echo ""
-        exit 1
+        if ! prompt_change_engine "$PCAP_ENGINE"; then
+            echo ""
+            exit 1
+        fi
         ;;
     *)
         echo ""