Upgrade helm sample to 0.11.0 version of SDK

[camilamacedo86]

Description

• Update project to work with SDK version 0.11.0
• Add README and Makefile in order to help users know how to check/use it

[jmccormick2001]

I built it locally, followed the README and it seems to work for me as suggested by the README

[joelanford]

@camilamacedo86 now that the helm-operator supports pulling and using a helm-chart from a helm repo, I'd suggest we update this to use the stable/memcached helm chart. WDYT?

operator-sdk new memcached-operator --type=helm --helm-chart=stable/memcached

[camilamacedo86]

I will check that @joelanford tks.

[joelanford]

Any reason we're deleting this? Seems to have some good info and doesn't require someone to navigate all the way into the memcached-operator sample.

Also, are there any incoming links to this README from any other repo?

[camilamacedo86]

Excellent catch. it was removed by mistake. back now.
Tks

[joelanford]

The formatting here isn't great. I'd suggest this:

Update the operator manifest to use the built image name (if you are performing these steps on OSX, see note below)
```sh
$ sed -i 's|REPLACE_IMAGE|quay.io/example/memcached-operator|g' deploy/operator.yaml
```

**Note**
If you are performing these steps on OSX, use the following `sed` command instead:
```sh
$ sed -i "" 's|REPLACE_IMAGE|quay.io/example/memcached-operator|g' deploy/operator.yaml
```

[joelanford]

Suggested change

	Following the expected result.
	Run the following commands to verify that the installation was successful:

[joelanford]

Suggested change

	To uninstall all that was performed in the above step run `make uninstall`.
	To uninstall all that was performed in the above step, run `make uninstall`.

[camilamacedo86]

I replaced the order to be easier the understanding and solve this issue 👍

[camilamacedo86]

HI @joelanford,

Thank you for the review. All requests are done. Also, I retest it locally as follows. Feel free to use cmacedo/memcached-operator:helm if you wish.

$ kubectl get all -n helm-memcached
NAME                                      READY   STATUS    RESTARTS   AGE
pod/example-memcached-0                   1/1     Running   0          27s
pod/example-memcached-1                   1/1     Running   0          19s
pod/example-memcached-2                   1/1     Running   0          10s
pod/memcached-operator-555bb889b6-qs9m2   1/1     Running   0          32s

NAME                                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)             AGE
service/example-memcached            ClusterIP   None             <none>        11211/TCP           27s
service/memcached-operator-metrics   ClusterIP   10.107.196.216   <none>        8686/TCP,8383/TCP   28s

NAME                                 READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/memcached-operator   1/1     1            1           32s

NAME                                            DESIRED   CURRENT   READY   AGE
replicaset.apps/memcached-operator-555bb889b6   1         1         1       32s

NAME                                 READY   AGE
statefulset.apps/example-memcached   3/3     27s 

[joelanford]

LGTM