nemu-config: Add machine_type to config file

nemu needs to be configured with:
`machine_type = "virt"` by default.

In addition, this commit removes
`machine_accelerators="virt"` which was added instead
of `machine_type` in a previous commit.

Fixes: kata-containers#1707.

Signed-off-by: Salvador Fuentes <salvador.fuentes@intel.com>
(cherry picked from commit 6be5e5f)
Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>

Makefile

@@ -245,7 +245,7 @@ ifneq (,$(NEMUCMD))
     # currently, huge pages are required for virtiofsd support
     DEFENABLEHUGEPAGES_NEMU := true
     # nemu uses virt machine type
-    DEFMACHINEACCELERATOR_NEMU := virt
+    DEFMACHINETYPE_NEMU := virt
     DEFBLOCKSTORAGEDRIVER_NEMU := virtio-scsi
     DEFNETWORKMODEL_NEMU := tcfilter
     KERNELNAME = $(call MAKE_KERNEL_NAME,$(KERNELTYPE))
@@ -334,7 +334,7 @@ USER_VARS += KERNELTYPE_FC
 USER_VARS += FIRMWAREPATH
 USER_VARS += FIRMWAREPATH_NEMU
 USER_VARS += MACHINEACCELERATORS
-USER_VARS += DEFMACHINEACCELERATOR_NEMU
+USER_VARS += DEFMACHINETYPE_NEMU
 USER_VARS += KERNELPARAMS
 USER_VARS += LIBEXECDIR
 USER_VARS += LOCALSTATEDIR
@@ -486,7 +486,7 @@ $(GENERATED_FILES): %: %.in $(MAKEFILE_LIST) VERSION .git-commit
 		-e "s|@FIRMWAREPATH@|$(FIRMWAREPATH)|g" \
 		-e "s|@FIRMWAREPATH_NEMU@|$(FIRMWAREPATH_NEMU)|g" \
 		-e "s|@MACHINEACCELERATORS@|$(MACHINEACCELERATORS)|g" \
-		-e "s|@DEFMACHINEACCELERATOR_NEMU@|$(DEFMACHINEACCELERATOR_NEMU)|g" \
+		-e "s|@DEFMACHINETYPE_NEMU@|$(DEFMACHINETYPE_NEMU)|g" \
 		-e "s|@KERNELPARAMS@|$(KERNELPARAMS)|g" \
 		-e "s|@LOCALSTATEDIR@|$(LOCALSTATEDIR)|g" \
 		-e "s|@PKGLIBEXECDIR@|$(PKGLIBEXECDIR)|g" \

cli/config/configuration-nemu.toml.in

@@ -15,6 +15,7 @@
 path = "@NEMUPATH@"
 kernel = "@KERNELPATH@"
 image = "@IMAGEPATH@"
+machine_type = "@DEFMACHINETYPE_NEMU@"
 
 # Optional space-separated list of options to pass to the guest kernel.
 # For example, use `kernel_params = "vsyscall=emulate"` if you are having
@@ -35,7 +36,7 @@ firmware = "@FIRMWAREPATH_NEMU@"
 # Machine accelerators
 # comma-separated list of machine accelerators to pass to the hypervisor.
 # For example, `machine_accelerators = "nosmm,nosmbus,nosata,nopit,static-prt,nofw"`
-machine_accelerators="@DEFMACHINEACCELERATOR_NEMU@"
+machine_accelerators=""
 
 # Default number of vCPUs per SB/VM:
 # unspecified or 0                --> will be set to @DEFVCPUS@