[feat] Add TESTING flag to whiptail menus for automated setup script testing

setup/so-functions

@@ -44,6 +44,9 @@ add_admin_user() {
 }
 
 add_master_hostfile() {
+
+	[ -n "$TESTING" ] && return
+	
 	echo "Checking if I can resolve master. If not add to hosts file" >> $SETUPLOG 2>&1
 	# Pop up an input to get the IP address
 	MSRVIP=$(whiptail --title "Security Onion Setup" --inputbox \