[Container-tools] Atomic App 0.5.0 Release!

[Charlie Drage]

Hey all!

This is a major release of Atomic App where we introduce a new CLI command as well as the renaming of multiple provider configuration parameters.

The main features of this release are:
  
  - Introduction of the `atomicapp init` CLI command
  - Renaming of provider configuration related parameters
  - --provider-auth added as a CLI command

Other:

  - Updated legal information
  - Bug fix on persistent storage initialization
  - Utility method to gather sudo user path and information
  - Improved detection if we're inside a Docker container
  - Improved readility on provider failed exceptions
  - docker inspect bugfix

## Atomic App Initialization

We've included support for initializing a basic Atomic App via the `atomicapp init` command. This creates a basic example that can be used on __Docker__ and __Kubernetes__ providers based on the [centos/httpd](https://hub.docker.com/r/centos/httpd/) docker image.

```bash
▶ atomicapp init helloworld
[INFO] - main.py - Action/Mode Selected is: init

Atomic App: helloworld initialized at ./helloworld

▶ vim ./helloworld/Nulecule # Make changes to the Nulecule file

▶ atomicapp run ./helloworld
[INFO] - main.py - Action/Mode Selected is: run
[INFO] - base.py - Provider not specified, using default provider - kubernetes
[WARNING] - plugin.py - Configuration option 'provider-config' not found
[WARNING] - plugin.py - Configuration option 'provider-config' not found
[INFO] - kubernetes.py - Using namespace default
[INFO] - kubernetes.py - trying kubectl at /usr/bin/kubectl
[INFO] - kubernetes.py - trying kubectl at /usr/local/bin/kubectl
[INFO] - kubernetes.py - found kubectl at /usr/local/bin/kubectl
[INFO] - kubernetes.py - Deploying to Kubernetes

Your application resides in ./helloworld
Please use this directory for managing your application

```

## New provider configuration parameter names

We've renamed the provider-specific parameters for better clarity by adding dashes in-between 'provider' and the specified function.

Major changes include the renaming of __accesstoken__ to __provider-auth__.

```
providerapi --> provider-api
accesstoken --> provider-auth
providertlsverify --> provider-tlsverify
providercafile --> provider-cafile
```

```ini
[general]
provider = openshift
namespace = mynamespace
provider-api = https://127.0.0.1:8443
provider-auth = sadfasdfasfasfdasfasfasdfsafasfd
provider-tlsverify = True
provider-cafile = /etc/myca/ca.pem
```

```sh
atomicapp run projectatomic/etherpad-centos7-atomicapp --provider openshift --provider-tlsverify False --provider-auth foo --provider-api "https://localhost:8443"
```

```
Charlie Drage <charlie at charliedrage.com>:
      Add more legal information
      Update year
      Requirements should retrieve from Nulecule object not graph
      Warn not error on missing requirement
      Util to gather what user is running Atomic App and which home dir it should use
      Check to see if it's a Docker container
      Update Dockerfile.pkgs testing repos
      Dashes added to CLI commands to distinguish provider config data
      Fix test params with the new dashes
      Add provider-auth as a CLI command and convert ACCESSTOKEN to provider-auth
      Modify accesstoken tests to provider-auth
      Change constant ACCESS_TOKEN_KEY to PROVIDER_AUTH_KEY
      Modify documentation to reflect changes in params
      Remove /host from provider config example path

Dusty Mabe <dusty at dustymabe.com>:
      init: modify docker template to publish to host port 80

Ratnadeep Debnath <rtnpro at gmail.com>:
      Added 'init' command to initialize a new atomic app.
      Make destination optional atomicapp init command
      Ask user if destination is not empty when initializting atomic app.
      Do not acquire lock for initializing atomicapp.
      Set default action as 'Y' when atomicapp init asks to clean dest directory.
      Include nulecule template files in package data.
      Add k8s service for initialized app.
      Moved Nulecule template files to external dir.
      Don't hard code atomicapp/nulecule versions in atomic app template.
      Show status message on atomicapp init run.
      Added doc strings for atomicapp init method.

Shubham Minglani <shubham at linux.com>:
      Handle ProviderFailedException, fix #627
      add pass for improved readability
      replace inspect with ps, fix #672

Suraj Deshmukh <surajssd009005 at gmail.com>:
      Added OrderedDict so as to deploy application in given order
```

As always, thank you all for the contributions and see you on github.com/projectatomic/atomicapp
-- 

Charlie Drage
Red Hat - OSAS Team / Project Atomic
4096R / 0x9B3B446C
http://pgp.mit.edu/pks/lookup?op=get&search=0x622CDF119B3B446C