make KDLKinematicsPlugin default again

ur5_moveit_config/config/kinematics.yaml

-manipulator:
-  kinematics_solver: ur_kinematics/UR5KinematicsPlugin
-  kinematics_solver_search_resolution: 0.005
-  kinematics_solver_timeout: 0.005
-  kinematics_solver_attempts: 3
+## the UR5KinematicsPlugin only works with the unlimited UR5, i.e. limited:=false
 #manipulator:
-#  kinematics_solver: kdl_kinematics_plugin/KDLKinematicsPlugin
+#  kinematics_solver: ur_kinematics/UR5KinematicsPlugin
 #  kinematics_solver_search_resolution: 0.005
 #  kinematics_solver_timeout: 0.005
-#  kinematics_solver_attempts: 3
+#  kinematics_solver_attempts: 3
\ No newline at end of file
+manipulator:
+  kinematics_solver: kdl_kinematics_plugin/KDLKinematicsPlugin
+  kinematics_solver_search_resolution: 0.005
+  kinematics_solver_timeout: 0.005
+  kinematics_solver_attempts: 3
\ No newline at end of file