Add network infrastructure

Add network group for filtering network hosts
Add network target for auth'ing to network hosts
Update playbooks to filter out network targets

vars/access.yaml

@@ -3,13 +3,13 @@ skylab_accounts:
   - name: enpaul
     uid: 1300
     fullname: Ethan N. Paul
-    targets: [cloud]
+    targets: [cloud, network]
     admin: true
     password: $y$j9T$cWkd9aGj4sNepyJm5NVZl0$yBhFy3cN3syM8r4doGYnsLZhsaTLQVoDIBs2kkXtxY2
 
   - name: ansible
     uid: 1400
-    targets: [cloud]
+    targets: [cloud, network]
     admin: true
     service: true
     password: $y$j9T$w/pIBtZIMo3PmXccZ.LHi1$AbMVIks.P10CyuK8tWt21O4JuLpKGpWTFgX0WlTbiw6