fix wifi manager portal missing parameters on esp8266 (#1132)

* fix wifi manager portal missing parameters on esp8266

on esp8266 with ZgatewayBT
Reducing the scope of the parameters on wifi manager for esp8266 to enable to enter properly the configuration

main/main.ino

@@ -1140,7 +1140,9 @@ void setup_wifimanager(bool reset_settings) {
   WiFiManagerParameter custom_mqtt_pass("pass", "mqtt pass", mqtt_pass, parameters_size * 2);
   WiFiManagerParameter custom_mqtt_topic("topic", "mqtt base topic", mqtt_topic, mqtt_topic_max_size);
   WiFiManagerParameter custom_mqtt_secure("secure", "mqtt secure", "1", 1, mqtt_secure ? "type=\"checkbox\" checked" : "type=\"checkbox\"");
+#    ifdef ESP32 // not enough memory on ESP8266
   WiFiManagerParameter custom_mqtt_cert("cert", "mqtt broker cert", mqtt_cert.c_str(), 2048);
+#    endif
   WiFiManagerParameter custom_gateway_name("name", "gateway name", gateway_name, parameters_size * 2);
 #  endif
   //WiFiManager
@@ -1169,7 +1171,9 @@ void setup_wifimanager(bool reset_settings) {
   wifiManager.addParameter(&custom_mqtt_user);
   wifiManager.addParameter(&custom_mqtt_pass);
   wifiManager.addParameter(&custom_mqtt_secure);
+#    ifdef ESP32 // not enough memory on ESP8266
   wifiManager.addParameter(&custom_mqtt_cert);
+#    endif
   wifiManager.addParameter(&custom_gateway_name);
   wifiManager.addParameter(&custom_mqtt_topic);
 #  endif
@@ -1227,6 +1231,7 @@ void setup_wifimanager(bool reset_settings) {
     strcpy(gateway_name, custom_gateway_name.getValue());
     mqtt_secure = *custom_mqtt_secure.getValue();
 
+#    ifdef ESP32 // not enough memory on ESP8266
     int cert_len = strlen(custom_mqtt_cert.getValue());
     if (cert_len) {
       char* cert_in = (char*)custom_mqtt_cert.getValue();
@@ -1244,6 +1249,7 @@ void setup_wifimanager(bool reset_settings) {
 
       mqtt_cert = cert_begin;
     }
+#    endif
 #  endif
     //save the custom parameters to FS
     saveMqttConfig();