CI: reduce VM resources requests to improve scheduling

tests/cloud_playbooks/roles/packet-ci/templates/vm.yml.j2

@@ -4,6 +4,8 @@ kind: VirtualMachine
 metadata:
   name: "instance-{{ vm_id }}"
   namespace: "{{ test_name }}"
+  annotations:
+    kubespray.com/ci.template-path: "tests/cloud_playbooks/roles/packet-ci/templates/vm.yml.j2"
   labels:
     kubevirt.io/os: {{ cloud_image }}
 spec:
@@ -34,10 +36,10 @@ spec:
             threads: {{ vm_cpu_threads }}
         resources:
           requests:
-            memory: {{ vm_memory * memory_allocation_ratio }}
+            memory: "{{ vm_memory * memory_allocation_ratio }}Mi"
             cpu: {{ vm_cpu_cores * cpu_allocation_ratio }}
           limits:
-            memory: {{ vm_memory }}
+            memory: "{{ vm_memory }}Mi"
             cpu: {{ vm_cpu_cores }}
       networks:
       - name: default