add missing build flags for failed builds

variants/heltec_t190/platformio.ini

@@ -88,6 +88,8 @@ build_flags =
   -D ADVERT_NAME='"Heltec T190 Repeater"'
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${Heltec_T190_base.build_src_filter}
   +<../examples/simple_repeater>
 lib_deps =