issue #28 Add KubeVirt add-on

add-ons/kubevirt/README.md

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+# Deploying KubeVirt on OpenShift
+
+* This addon provides an easy way to install [KubeVirt](https://kubevirt.io/) on [Minishift](https://github.com/minishift/minishift).
+* Prerequisites:
+
+ * [Installed and running](https://docs.openshift.org/latest/minishift/getting-started/installing.html) Minishift
+ * [Installed](https://docs.openshift.org/latest/minishift/command-ref/minishift_oc-env.html) OpenShift CLI
+
+## Start Minishift
+
+* The deployment works with Minishift default resources - 2 CPUs and 2 GB RAM. Nevertheless we prefer to allocate more memory (as much as you'd need to run your VMs) available to KubeVirt. Start Minishift using following command to provide more RAM.
+
+  ```shell
+  $ minishift start --memory=8GB
+  ```
+
+## Add-on installation
+
+* Clone this repository onto your local machine and then install the add-on via:
+
+  ```shell
+  $ minishift addons install <path_to_directory_containing_this_readme>
+  ```
+
+## Start KubeVirt
+
+* Deploy all KubeVirt components.
+
+  ```shell
+  $ minishift addons apply kubevirt
+  ```
+
+## Variables
+
+*KUBEVIRT_VERSION* is mandatory and must be set to one of the [KubeVirt available releases](https://github.com/kubevirt/kubevirt/releases), by default it's set to *v0.7.0-alpha.2*.
+
+> **NOTE**: Due to issues on KubeVirt (e.g. [kubevirt/kubevirt#1196](https://github.com/kubevirt/kubevirt/issues/1196)) *KUBEVIRT_VERSION* is set to *v0.7.0-alpha.2* and it's not recommended to use a newer one until the issues are fixed.

add-ons/kubevirt/kubevirt.addon

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+# Name: kubevirt
+# Description: Installs KubeVirt. For more information visit https://kubevirt.io
+# Required-Vars: KUBEVIRT_VERSION
+# Var-Defaults: KUBEVIRT_VERSION=v0.7.0-alpha.2
+# OpenShift-Version: >=3.9.0
+
+echo Deploying KubeVirt...
+
+oc adm policy add-scc-to-user privileged system:serviceaccount:kube-system:kubevirt-privileged
+oc adm policy add-scc-to-user privileged system:serviceaccount:kube-system:kubevirt-controller
+oc adm policy add-scc-to-user privileged system:serviceaccount:kube-system:kubevirt-infra
+oc apply -f https://github.com/kubevirt/kubevirt/releases/download/#{KUBEVIRT_VERSION}/kubevirt.yaml
+oc adm policy add-cluster-role-to-user kubevirt.io:edit developer
+
+echo Deployment applied, KubeVirt is starting up!

test/integration/features/kubevirt.feature

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+@kubevirt
+Feature: KubeVirt add-on
+    KubeVirt addon starts KubeVirt
+
+    @minishift-only
+    Scenario: User install kubevirt add-on
+      Given stdout of command "minishift addons list" does not contain "kubevirt"
+       When executing "minishift addons install ../../add-ons/kubevirt" succeeds
+       Then stdout should contain "Addon 'kubevirt' installed"
+
+    Scenario: Minishift starts
+      Given Minishift has state "Does Not Exist"
+       When executing "minishift start --memory 4GB" succeeds
+       Then Minishift should have state "Running"
+
+    Scenario: Applying the add-on
+       When executing "minishift addons apply kubevirt" succeeds
+       Then stdout should contain "Deployment applied, KubeVirt is starting up!"
+
+    Scenario: KubeVirt is ready
+      Given Minishift has state "Running"
+       When executing "minishift openshift service list" succeeds
+       Then stdout should contain "virt-api"
+
+    Scenario: DaemonSet virt-handler is ready
+      Given user waits "60" seconds
+       When executing "oc get ds -n kube-system --as system:admin" succeeds
+       Then stdout should match "virt-handler(\s+1){5}"
+
+    Scenario: ReplicaSet virt-api and virt-controller are ready
+      Given user waits "60" seconds
+       When executing "oc get rs -n kube-system --as system:admin" succeeds
+       Then stdout should match "virt-api-\w{10}(\s+2){3}"
+        And stdout should match "virt-controller-\w{10}(\s+2){3}"
+
+    Scenario: Deleting Minishift
+      Given Minishift has state "Running"
+       When executing "minishift delete --force" succeeds
+       Then Minishift should have state "Does Not Exist"