Fix fresh jenkins node qemu error


PROD-37124
Change-Id: I69d164c504984c1d4e9ab1b9922ab95ef60bddae
diff --git a/mirror-image/template.json b/mirror-image/template.json
index 94e9b69..ac55c4e 100644
--- a/mirror-image/template.json
+++ b/mirror-image/template.json
@@ -154,8 +154,12 @@
       "type": "qemu",
       "qemuargs": [
         [
+          "-cpu",
+          "host"
+        ],
+        [
           "-m",
-          "8096M"
+          "4096M"
         ],
         [
           "-cdrom",