added prefix (#189)

Author: mhubii

lbr_description/urdf/iiwa14/iiwa14_description.xacro

@@ -285,7 +285,7 @@
             </collision>
         </link>
 
-        <joint name="joint_ee" type="fixed">
+        <joint name="${robot_name}_joint_ee" type="fixed">
             <parent link="${robot_name}_link_7" />
             <child link="${robot_name}_link_ee" />
             <origin xyz="0 0 0.035" rpy="0 0 0" />

lbr_description/urdf/iiwa7/iiwa7_description.xacro

@@ -286,7 +286,7 @@
             </collision>
         </link>
 
-        <joint name="joint_ee" type="fixed">
+        <joint name="${robot_name}_joint_ee" type="fixed">
             <parent link="${robot_name}_link_7" />
             <child link="${robot_name}_link_ee" />
             <origin xyz="0 0 0.035" rpy="0 0 0" />

lbr_description/urdf/med14/med14_description.xacro

@@ -286,7 +286,7 @@
             </collision>
         </link>
 
-        <joint name="joint_ee" type="fixed">
+        <joint name="${robot_name}_joint_ee" type="fixed">
             <parent link="${robot_name}_link_7" />
             <child link="${robot_name}_link_ee" />
             <origin xyz="0 0 0.035" rpy="0 0 0" />

lbr_description/urdf/med7/med7_description.xacro

@@ -286,7 +286,7 @@
             </collision>
         </link>
 
-        <joint name="joint_ee" type="fixed">
+        <joint name="${robot_name}_joint_ee" type="fixed">
             <parent link="${robot_name}_link_7" />
             <child link="${robot_name}_link_ee" />
             <origin xyz="0 0 0.035" rpy="0 0 0" />