Modifies kubectl task according to the new reorg proposal

Changes include:
  - adds version label
  - adds a minimum pipeline versions supported by the task
  - adds tags for task
  - modified description to add a summary

This patch moves the kubectl files to the task directory and
renames the yaml file and the directory
  - The yaml filename and the directory is changed to match the resource name
  - Modifies the path for install task command in readme file

Issue: #386

Signed-off-by: Shiv Verma <shverma@redhat.com>

task/kubectl-deploy-pod/0.1/README.md

@@ -6,7 +6,7 @@ This Task deploys (or delete) a Kubernates resource (pod). It uses
 ## Install the Task
 
 ```
-kubectl apply -f https://raw.githubusercontent.com/tektoncd/catalog/v1beta1/kubectl/kubectl-deploy.yaml
+kubectl apply -f https://raw.githubusercontent.com/tektoncd/catalog/v1beta1/task/kubectl-deploy-pod/0.1/kubectl-deploy-pod.yaml
 ```
 
 ## Install ClusterRole

task/kubectl-deploy-pod/0.1/kubectl-deploy-pod.yaml

@@ -2,8 +2,17 @@ apiVersion: tekton.dev/v1beta1
 kind: Task
 metadata:
   name: kubectl-deploy-pod
+  labels:
+    app.kubernetes.io/version: "0.1"
+  annotations:
+    tekton.dev/pipelines.minVersion: "0.12.1"
+    tekton.dev/tags: deploy, delete
   namespace: default
 spec:
+  description: >-
+    This Task deploys (or delete) a Kubernates resource (pod). It uses
+    kubectl for that.
+
   params:
   - name: action
     description: Action on the resource