Merge uninstall script into the voyager.sh script (#854)

docs/setup/install.md

@@ -41,7 +41,7 @@ options:
     --image-pull-secret            name of secret used to pull voyager operator images
     --restrict-to-namespace        restrict voyager to its own namespace
     --run-on-master                run voyager operator on master
-    --enable-apiserver     configure admission webhook for Voyager CRDs
+    --enable-admission-webhook     configure admission webhook for Voyager CRDs
     --template-cfgmap=CONFIGMAP    name of configmap with custom templates
 
 # install without RBAC roles
@@ -89,11 +89,11 @@ $ curl -fsSL https://raw.githubusercontent.com/appscode/voyager/6.0.0-alpha.0/ha
     | bash -s -- --provider=$provider --docker-registry=MY_REGISTRY [--image-pull-secret=SECRET_NAME] [--rbac]
 ```
 
-Voyager implements a [validating admission webhook](https://kubernetes.io/docs/admin/admission-controllers/#validatingadmissionwebhook-alpha-in-18-beta-in-19) to validate Voyager CRDs. To enable this feature, pass the `--enable-apiserver` flag. _Please note that, this works with Kubernetes 1.9.0 or later releases_.
+Voyager implements a [validating admission webhook](https://kubernetes.io/docs/admin/admission-controllers/#validatingadmissionwebhook-alpha-in-18-beta-in-19) to validate Voyager CRDs. To enable this feature, pass the `--enable-admission-webhook` flag. _Please note that, this works with Kubernetes 1.9.0 or later releases_.
 
 ```console
 $ curl -fsSL https://raw.githubusercontent.com/appscode/voyager/6.0.0-alpha.0/hack/deploy/voyager.sh \
-    | bash -s -- --provider=$provider --enable-apiserver [--rbac]
+    | bash -s -- --provider=$provider --enable-admission-webhook [--rbac]
 ```
 
 __N.B.__

docs/setup/uninstall.md

@@ -19,7 +19,8 @@ Please follow the steps below to uninstall Voyager:
 - Delete the deployment and service used for Voyager operator.
 
 ```console
-$ curl -fsSL https://raw.githubusercontent.com/appscode/voyager/6.0.0-alpha.0/hack/deploy/uninstall.sh | bash
+$ curl -fsSL https://raw.githubusercontent.com/appscode/voyager/6.0.0-alpha.0/hack/deploy/voyager.sh \
+    | bash -s -- --uninstall [--namespace=NAMESPACE]
 
 + kubectl delete deployment -l app=voyager -n kube-system
 deployment "voyager-operator" deleted

hack/deploy/admission.yaml

@@ -0,0 +1,35 @@
+# register to intercept voyager CRD creates / updates
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: admission.voyager.appscode.com
+  labels:
+    app: voyager
+webhooks:
+- name: admission.voyager.appscode.com
+  clientConfig:
+    service:
+      namespace: default
+      name: kubernetes
+      path: /apis/admission.voyager.appscode.com/v1beta1/admissionreviews
+    caBundle: $KUBE_CA
+  rules:
+  - operations:
+    - CREATE
+    - UPDATE
+    apiGroups:
+    - voyager.appscode.com
+    apiVersions:
+    - "*"
+    resources:
+    - "*"
+  - operations:
+    - CREATE
+    - UPDATE
+    apiGroups:
+    - extensions
+    apiVersions:
+    - v1beta1
+    resources:
+    - ingresses
+  failurePolicy: Fail