Rover: Added the new skid steering parameters file for SITL.

Tools/autotest/Rover-skid.parm

@@ -0,0 +1,36 @@
+SKID_STEER_OUT 1
+EK2_ENABLE      1
+WP_RADIUS 3
+LOG_BITMASK	65535
+MAG_ENABLE	1
+CRUISE_SPEED     5
+CRUISE_THROTTLE  30
+THR_MAX		100
+RC3_MAX         2000
+RC3_MIN         1000
+RC3_TRIM        1500
+RC1_MAX         2000
+RC1_MIN         1000
+RC1_TRIM        1500
+MODE1        0
+MODE2        0
+MODE3        11
+MODE4        10
+MODE5        2
+MODE6        0
+STEER2SRV_P     1.8
+SIM_GPS_DELAY 1
+NAVL1_PERIOD 6
+# we need small INS_ACC offsets so INS is recognised as being calibrated
+INS_ACCOFFS_X   0.001
+INS_ACCOFFS_Y   0.001
+INS_ACCOFFS_Z   0.001
+INS_ACCSCAL_X   1.001
+INS_ACCSCAL_Y   1.001
+INS_ACCSCAL_Z   1.001
+INS_ACC2OFFS_X   0.001
+INS_ACC2OFFS_Y   0.001
+INS_ACC2OFFS_Z   0.001
+INS_ACC2SCAL_X   1.001
+INS_ACC2SCAL_Y   1.001
+INS_ACC2SCAL_Z   1.001