qemu.tests: Add data-plane support for virtio-scsi since RHEL.7.3.

Signed-off-by: NCong Li <coli@redhat.com>

qemu/tests/cfg/block_stream.cfg

@@ -75,8 +75,14 @@
             variants:
                 - @default:
                 - data_plane:
+                    only Host_RHEL.m7
+                    only virtio_blk virtio_scsi
                     iothreads = iothread0
-                    blk_extra_params_image1 = "iothread=${iothreads}"
+                    virtio_blk:
+                        blk_extra_params_image1 = "iothread=${iothreads}"
+                    virtio_scsi:
+                        no Host_RHEL.m7.u0, Host_RHEL.m7.u1, Host_RHEL.m7.u2
+                        bus_extra_params_image1 = "iothread=${iothreads}"
                 - cancel_async:
                     wait_finished = no
                     cancel_timeout_image1 = 3

qemu/tests/cfg/multi_host.cfg

@@ -408,13 +408,17 @@
                     filesize = 100
                     transfer_timeout = 1000
 
-                - virtio_blk_data_plane:
+                - with_data_plane:
                     only Host_RHEL.m7
-                    only virtio_blk
+                    only virtio_blk virtio_scsi
                     type = migration_multi_host_with_stress
                     preprocess_env = yes
                     iothreads = iothread0
-                    blk_extra_params_image1 = "iothread=${iothreads}"
+                    virtio_blk:
+                        blk_extra_params_image1 = "iothread=${iothreads}"
+                    virtio_scsi:
+                        no Host_RHEL.m7.u0, Host_RHEL.m7.u1, Host_RHEL.m7.u2
+                        bus_extra_params_image1 = "iothread=${iothreads}"
                     drive_werror_image1 = stop
                     drive_rerror_image1 = stop
                     bg_stress_test = autotest_control

qemu/tests/cfg/slof_dataplane_boot.cfg

@@ -5,5 +5,10 @@
     kill_vm_on_error = yes
     login_timeout = 240
     only ppc64 ppc64le
-    extra_params += " -object iothread,id=iothread0"
-    blk_extra_params_image1 = "iothread=iothread0"
+    only virtio_blk virtio_scsi
+    iothreads = iothread0
+    virtio_blk:
+        blk_extra_params_image1 = "iothread=${iothreads}"
+    virtio_scsi:
+        no Host_RHEL.m7.u0, Host_RHEL.m7.u1, Host_RHEL.m7.u2
+        bus_extra_params_image1 = "iothread=${iothreads}"