add displayFee condition to ugandan mobile money

Author: biodunalfet

raveandroid/src/main/java/com/flutterwave/raveandroid/ugmobilemoney/UgMobileMoneyFragment.java

@@ -164,7 +164,11 @@ private void validate() {
 
             Payload body = builder.createUgMobileMoneyPayload();
 
-            presenter.fetchFee(body);
+            if(ravePayInitializer.getIsDisplayFee()){
+                presenter.fetchFee(body);
+            } else {
+                presenter.chargeUgMobileMoney(body, ravePayInitializer.getEncryptionKey());
+            }
         }
 
     }