stages: add more options to qemu vmdk disk type

The CoreOS team uses the compat6 and adapter_type options when creating
a VMDK for AWS.

e1943d6adb/src/cosalib/qemuvariants.py (L48)

test/data/stages/qemu/qemu.json

@@ -638,6 +638,34 @@
         }
       ]
     },
+    {
+      "name": "image-compat6-adapter-type.vmdk",
+      "build": "name:build",
+      "stages": [
+        {
+          "type": "org.osbuild.qemu",
+          "inputs": {
+            "image": {
+              "type": "org.osbuild.files",
+              "origin": "org.osbuild.pipeline",
+              "references": {
+                "name:image": {
+                  "file": "image.raw"
+                }
+              }
+            }
+          },
+          "options": {
+            "filename": "image-stream.vmdk",
+            "format": {
+              "type": "vmdk",
+              "compat6": true,
+              "adapter_type": "lsilogic"
+            }
+          }
+        }
+      ]
+    },
     {
       "name": "image.vpc",
       "build": "name:build",

test/data/stages/qemu/qemu.mpp.yaml

@@ -91,6 +91,23 @@ pipelines:
           format:
             type: vmdk
             subformat: streamOptimized
+  - name: image-compat6-adapter-type.vmdk
+    build: name:build
+    stages:
+      - type: org.osbuild.qemu
+        inputs:
+          image:
+            type: org.osbuild.files
+            origin: org.osbuild.pipeline
+            references:
+              name:image:
+                file: image.raw
+        options:
+          filename: image-stream.vmdk
+          format:
+            type: vmdk
+            compat6: true
+            adapter_type: lsilogic
   - name: image.vpc
     build: name:build
     stages: