Rename qemu image type to qemu image format

gns3server/modules/qemu/qemu_vm.py

@@ -1253,12 +1253,12 @@ class QemuVM(BaseVM):
         :returns: Image name with the extensions
         """
 
-        img_type = options.pop("type")
+        img_format = options.pop("format")
         img_size = options.pop("size")
-        img_name = "{}.{}".format(name, img_type)
+        img_name = "{}.{}".format(name, img_format)
 
         qemu_img = self._get_qemu_img()
-        command = [qemu_img, "create", "-f", img_type]
+        command = [qemu_img, "create", "-f", img_format]
         for option in sorted(options.keys()):
             command.extend(["-o", "{}={}".format(option, options[option])])
         command.append(os.path.join(self.working_dir, img_name))

tests/modules/qemu/test_qemu_vm.py

@@ -415,7 +415,7 @@ def test_get_qemu_img(vm, tmpdir):
     open(str(tmpdir / "qemu-sytem-x86_64"), "w+").close()
     open(str(tmpdir / "qemu-img"), "w+").close()
     vm._qemu_path = str(tmpdir / "qemu-sytem-x86_64")
-    assert vm._get_qemu_img() ==  str(tmpdir / "qemu-img")
+    assert vm._get_qemu_img() == str(tmpdir / "qemu-img")
 
 
 def test_get_qemu_img_not_exist(vm, tmpdir):
@@ -428,7 +428,7 @@ def test_get_qemu_img_not_exist(vm, tmpdir):
 
 def test_create_image(vm, loop, fake_qemu_img_binary):
     options = {
-        "type": "qcow2",
+        "format": "qcow2",
         "preallocation": "metadata",
         "cluster_size": 64,
         "refcount_bits": 12,