Adding ability to manualy configure network inside VM before boot.

This patchset obsoletes switching from "dhcp" to "static" during
deployment.

Example pillars:
salt:
  control:
    enabled: true
    virt_enabled: true
    size:
      small:
        cpu: 1
        ram: 1
    cluster:
      infra:
        domain: example.com
        engine: virt
        config:
          engine: salt
          host: master.domain.com
        cloud_init:
          network_data:
            links:
            - id: ens2
              name: ens2
              type: phy
          user_data:
            disable_ec2_metadata: true
            resize_rootfs: True
            timezone: UTC
            ssh_deletekeys: True
            ssh_genkeytypes: ['rsa', 'dsa', 'ecdsa']
            ssh_svcname: ssh
            locale: en_US.UTF-8
            disable_root: true
            apt_preserve_sources_list: false
            apt:
              sources_list: ""
              sources:
                ubuntu.list:
                  source: ${linux:system:repo:ubuntu:source}
                mcp_saltstack.list:
                  source: ${linux:system:repo:mcp_saltstack:source}
        node:
          ctl01:
            provider: kvm01.example.com
            image: ubuntu-16.04.qcow2
            size: small
            cloud_init:
              network_data:
                networks:
                - id: private-ipv4
                  ip_address: 192.168.0.161
                  link: ens2
                  netmask: 255.255.255.0
                  routes:
                  - gateway: 192.168.0.1
                    netmask: 0.0.0.0
                    network: 0.0.0.0
                  type: ipv4

Change-Id: I087518404c61e0bab2303e40957bacca94692102
diff --git a/tests/pillar/control_virt_custom.sls b/tests/pillar/control_virt_custom.sls
index 71cf37f..061d47d 100644
--- a/tests/pillar/control_virt_custom.sls
+++ b/tests/pillar/control_virt_custom.sls
@@ -1,3 +1,13 @@
+_param:
+  private-ipv4: &private-ipv4
+  - id: private-ipv4
+    type: ipv4
+    link: ens2
+    netmask: 255.255.255.0
+    routes:
+    - gateway: 192.168.0.1
+      netmask: 0.0.0.0
+      network: 0.0.0.0
 virt:
   disk:
     three_disks:
@@ -57,6 +67,29 @@
         config:
           engine: salt
           host: master.domain.com
+        cloud_init:
+          user_data:
+            disable_ec2_metadata: true
+            resize_rootfs: True
+            timezone: UTC
+            ssh_deletekeys: True
+            ssh_genkeytypes: ['rsa', 'dsa', 'ecdsa']
+            ssh_svcname: ssh
+            locale: en_US.UTF-8
+            disable_root: true
+            apt_preserve_sources_list: false
+            apt:
+              sources_list: ""
+              sources:
+                ubuntu.list:
+                  source: ${linux:system:repo:ubuntu:source}
+                mcp_saltstack.list:
+                  source: ${linux:system:repo:mcp_saltstack:source}
+          network_data:
+            links:
+            - id: ens2
+              type: phy
+              name: ens2
         node:
           ubuntu1:
             provider: node01.domain.com
@@ -72,6 +105,11 @@
             provider: node03.domain.com
             image: meowbuntu.qcom2
             size: medium_three_disks
+            cloud_init:
+              network_data:
+                networks:
+                - <<: *private-ipv4
+                  ip_address: 192.168.0.161
             rng:
               backend: /dev/urandom
               model: random