Models: add ArduPilotPlugin option <no_time_sync>1</no_time_sync>

Signed-off-by: Rhys Mainwaring <rhys.mainwaring@me.com>

Author: srmainwaring

models/iris_with_ardupilot/model.sdf

@@ -786,6 +786,7 @@
       <fdm_port_in>9002</fdm_port_in>
       <connectionTimeoutMaxCount>5</connectionTimeoutMaxCount>
       <lock_step>1</lock_step>
+      <no_time_sync>1</no_time_sync>
       <have_32_channels>0</have_32_channels>
 
       <!-- Frame conventions

models/iris_with_gimbal/model.sdf

@@ -191,6 +191,7 @@
       <fdm_port_in>9002</fdm_port_in>
       <connectionTimeoutMaxCount>5</connectionTimeoutMaxCount>
       <lock_step>1</lock_step>
+      <no_time_sync>1</no_time_sync>
 
       <!-- Frame conventions
         Require by ArduPilot: change model and gazebo from XYZ to XY-Z coordinates

models/zephyr_with_ardupilot/model.sdf

@@ -159,6 +159,7 @@
       <fdm_port_in>9002</fdm_port_in>
       <connectionTimeoutMaxCount>5</connectionTimeoutMaxCount>
       <lock_step>1</lock_step>
+      <no_time_sync>1</no_time_sync>
 
       <!-- Frame conventions
         modelXYZToAirplaneXForwardZDown:

models/zephyr_with_parachute/model.sdf

@@ -191,6 +191,7 @@
       <fdm_port_in>9002</fdm_port_in>
       <connectionTimeoutMaxCount>5</connectionTimeoutMaxCount>
       <lock_step>1</lock_step>
+      <no_time_sync>1</no_time_sync>
 
       <!-- Frame conventions
         modelXYZToAirplaneXForwardZDown:

tests/worlds/test_anemometer.sdf

@@ -289,6 +289,7 @@
         <fdm_port_in>9002</fdm_port_in>
         <connectionTimeoutMaxCount>5</connectionTimeoutMaxCount>
         <lock_step>1</lock_step>
+        <no_time_sync>1</no_time_sync>
         <gazeboXYZToNED degrees="true">0 0 0 180 0 90</gazeboXYZToNED>
         <modelXYZToAirplaneXForwardZDown degrees="true">0 0 0 180 0 0</modelXYZToAirplaneXForwardZDown>
         <imuName>imu_link::imu_sensor</imuName>