title: Dataflow - Error: Message: Required 'compute.subnetworks.get' permission
body: <p>Scenario - Running Dataflow jobs on project A using a shared VPC to use the region and subnetwork of host project B</p>
  <p>On the service account, I have following permission on both project A and B</p>
  <pre><code>Compute Admin
  Compute Network User
  Dataflow Admin
  Cloud Dataflow Service Agent
  Editor
  Storage Admin
  Serverless VPC Access Admin 
  </code></pre>
  <p>But still I get this error</p>
  <pre><code>Workflow failed. Causes: Error: Message: Required 'compute.subnetworks.get' permission for 'projects/&lt;host project&gt;/regions/us-east1/subnetworks/&lt;subnetwork name&gt;' HTTP Code: 403
  </code></pre>
  <p>What am I missing here? or what other permission should this have?
  Thanks for looking into this.</p>