autotest: adjust default params for new mixing

Tools/autotest/default_params/firefly.parm

@@ -1,4 +1,7 @@
-ELEVON_OUTPUT    4
+SERVO1_FUNCTION = 77
+SERVO2_FUNCTION = 78
+SERVO1_REVERSED = 1
+SERVO2_REVERSED = 1
 AHRS_EKF_TYPE    2
 ARMING_RUDDER    2
 ARSPD_FBW_MAX    35

Tools/autotest/default_params/gazebo-zephyr.parm

@@ -1,4 +1,7 @@
-ELEVON_OUTPUT 4
+SERVO1_FUNCTION = 77
+SERVO2_FUNCTION = 78
+SERVO1_REVERSED = 1
+SERVO2_REVERSED = 1
 # we need small INS_ACC offsets so INS is recognised as being calibrated
 INS_ACCOFFS_X   0.001
 INS_ACCOFFS_Y   0.001

Tools/autotest/default_params/plane-jsbsim.parm

@@ -66,8 +66,6 @@ PTCH2SRV_P       2.5
 PTCH2SRV_RLL     1
 NAVL1_PERIOD     15
 ACRO_LOCKING     1
-ELEVON_OUTPUT    0
-VTAIL_OUTPUT     0
 # we need small INS_ACC offsets so INS is recognised as being calibrated
 INS_ACCOFFS_X   0.001
 INS_ACCOFFS_Y   0.001

Tools/autotest/default_params/plane-tailsitter.parm

@@ -8,7 +8,6 @@ ARSPD_USE       1
 ARSPD_FBW_MAX   30
 ARSPD_FBW_MIN   10
 THR_MAX		100
-ELEVON_OUTPUT   0
 KFF_RDDRMIX     1
 RC1_MAX         2000
 RC1_MIN         1000

Tools/autotest/default_params/plane.parm

@@ -62,8 +62,6 @@ PTCH2SRV_P       2.5
 PTCH2SRV_RLL     1
 NAVL1_PERIOD     15
 ACRO_LOCKING     1
-ELEVON_OUTPUT    0
-VTAIL_OUTPUT     0
 # we need small INS_ACC offsets so INS is recognised as being calibrated
 INS_ACCOFFS_X   0.001
 INS_ACCOFFS_Y   0.001