Added some missing dependencies. Uncommented realsense launch. Added realsense config file

launch/bringup.launch

@@ -40,11 +40,11 @@
         <arg name="launch_prefix" value="$(arg launch_prefix)"/>
       </include>
 
-<!--      <include file="$(find iri_realsense_depth_bringup)/launch/realsense.launch">
+      <include file="$(find iri_realsense_depth_bringup)/launch/realsense.launch">
         <arg name="config_file" value="$(arg realsense_config_file)"/>
         <arg name="camera_name" value="$(arg realsense_camera_name)"/>
         <arg name="tf_prefix"   value="$(arg realsense_tf_prefix)"/>
-      </include>-->
+      </include>
 
       <include file="$(find iri_bno055_imu_bringup)/launch/bno055_imu.launch">
         <arg name="config_file"      value="$(arg imu_config_file)"/>