add 5 bio_drones test

iq_sim/launch/multi_drone.launch

@@ -1,7 +0,0 @@
-<launch>
-  <!-- We resume the logic in empty_world.launch, changing only the name of the world to be launched -->
-  <include file="$(find gazebo_ros)/launch/empty_world.launch">
-    <arg name="world_name" value="$(find iq_sim)/worlds/multi_drone.world"/>
-    <!-- more default parameters can be changed here -->
-  </include>
-</launch>

iq_sim/worlds/five_drone.world

@@ -117,32 +117,32 @@
 
 
     <model name="drone1">
-      <pose> -10 -10 0 0 0 0</pose>
+      <pose> 0 0 0 0 0 0</pose>
       <include>
         <!-- <uri>model://drone1</uri> -->
         <uri>model://drone_with_camera</uri>
       </include>
     </model>
     <model name="drone2">
-      <pose> -10 -12 0 0 0 0</pose>
+      <pose> 0 4 0 0 0 0</pose>
       <include>
         <uri>model://drone2</uri>
       </include>
     </model>
     <model name="drone3">
-      <pose> -10 -8 0 0 0 0</pose>
+      <pose> 0 8 0 0 0 0</pose>
       <include>
         <uri>model://drone3</uri>
       </include>
     </model>
         <model name="drone4">
-      <pose> -10 -14 0 0 0 0</pose>
+      <pose> 0 -4 0 0 0 0</pose>
       <include>
         <uri>model://drone4</uri>
       </include>
     </model>
         <model name="drone5">
-      <pose> -10 -6 0 0 0 0</pose>
+      <pose> 0 -8 0 0 0 0</pose>
       <include>
         <uri>model://drone5</uri>
       </include>