title: Network Policy - Restricting Egress From Some Namespaces But Allowing Other Namespace
body: <p>Suppose I have these <code>ns</code></p>
  <pre><code>nginx-master - Running my Ingress controller
  monitoring   - Running Prometheus, Grafana
  </code></pre>
  <pre><code>app1-project (Parent)
    app1-dev
    app1-qa
  
  app2-project(Parent)
    app2-dev
    app2-qa
  </code></pre>
  <p>I basically wanted to send traffic (ingress/egress) from <code>nginx-master</code> and monitoring to app1-project and app2-project (Propagated to their respective children)</p>
  <p>However, blocking any (ingress/egress) traffic from app1-project and app2-project to each other</p>