OO-2636: reenable downlload of drones

src/test/resources/arquillian.xml

@@ -23,11 +23,11 @@
 	<extension qualifier="webdriver">
 		<property name="browser">chrome</property>
 		<property name="dimensions">1024x800</property>
-		 
+		<!--
 		<property name="downloadBinaries">no</property>
 		<property name="chromeDriverBinary">target/drone/b77c9c71b52302fcfe6b40dcd143f1d0/chromedriver</property>
 		<property name="firefoxDriverBinary">target/drone/30f3fdc84d76c53de2916008a889d26f/geckodriver</property>
-		
+		-->
 		<property name="firefoxUserPreferences">src/test/profile/firefox/prefs.js</property>
 		<property name="chromeExperimentalOption">{
 			"prefs":{"credentials_enable_service": false, "profile.password_manager_enabled": false }