fix(rules): check numeric cpu limits

rules/kubernetes.yml

@@ -56,9 +56,7 @@ rules:
         limits:
           type: object
           properties:
-            cpu:
-              type: string
-              pattern: "[0-9]+m"
+            cpu: &resources-cpu
 
     # ensure the limits aren't *too* low
     check:
@@ -68,8 +66,11 @@ rules:
           type: object
           properties:
             cpu:
-              type: string
-              pattern: "[1-9][0-9]{2,}m"
+              oneOf:
+                - type: number
+                  minimum: 1
+                - type: string
+                  pattern: "[1-9][0-9]{2,}m"
 
   - name: kubernetes-deployment-replicas
     desc: deployments must specify a positive replica count