demo/k8s: prepare.sh issues

[mpduarte]

• msg: Aborting, target uses selinux but python bindings (libselinux-python) aren't installed! recieved on all hosts
  Appears libselinux-python is a requirement for the script, manually installing package on hosts for now.
• failed: [1-k8master] => {"changed": true, "cmd": "ifconfig "enp4s0f0" "10.199.1.226"/24", "delta": "0:00:00.003001", "end": "2016-03-07 13:59:01.543374", "rc": 127, "start": "2016-03-07 13:59:01.540373", "warnings": []}
  stderr: /bin/sh: ifconfig: command not found
  net-tools isn't a default install anymore with 7, red hat is moving on. Installed manually, to bypass issue for now.
• Running through the prepare script, I lost connection to installer host on SSH
  it appears the network service needs to be restarted, before connection can be restored
• Multiple runs of prepare.sh yielded duplicate host entries in hosts file. Suggest a way to clean up hosts file after a failed run.

[jainvipin]

ping @jojimt

[jojimt]

The scripts currently assume that the kube master is named k8master. If it's possible for you to retain that naming, that will get you going. Meanwhile, I will update the scripts to make this configurable.

[mpduarte]

I removed the final ping check to keep moving forward.

[mpduarte]

Updated issue list to reflect updated understanding of what's going on. Thanks @jojimt for all the help so far!

[gaurav-dalvi]

@jojimt Can we close this issue ?