Use python3 instead of python2 in heat fragments for fedora ironic

[yatin]

python binary doesn't exist in fedora-ironic image, due to this cert creation fails. We should use python3 binary instead and update code as per python3

[fedora@k8-lr56snxfpn-0-do2uu73wo3jp-kube-master-zyjc3hibmfe3 ~]$ cat /etc/redhat-release
Fedora release 25 (Twenty Five)
[fedora@k8-lr56snxfpn-0-do2uu73wo3jp-kube-master-zyjc3hibmfe3 ~]$ uname -a
Linux k8-lr56snxfpn-0-do2uu73wo3jp-kube-master-zyjc3hibmfe3.novalocal 4.9.5-200.fc25.x86_64 #1 SMP Fri Jan 20 12:24:16 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[fedora@k8-lr56snxfpn-0-do2uu73wo3jp-kube-master-zyjc3hibmfe3 ~]$ python3
python3 python3.5 python3.5m python3-chardetect
[fedora@k8-lr56snxfpn-0-do2uu73wo3jp-kube-master-zyjc3hibmfe3 ~]$ python
-bash: python: command not found

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/450240

[Spyros Trigazis (strigazi)]

The ironic image don't contain python?

I had explicitly added python2 in my build. I must have skipped it in my latest build.

[Spyros Trigazis (strigazi)]

We need a ci for this image.

[Spyros Trigazis (strigazi)]

There, I missed it https://review.openstack.org/#/c/417457/3/magnum/drivers/k8s_fedora_ironic_v1/image/kubernetes/package-installs.yaml

[yatin (yatinkarel)]

The ironic image don't contain python?
Yes python2 is not there. I used: https://fedorapeople.org/groups/magnum/fedora-25-kubernetes-ironic.tar.gz

We need a ci for this image. There, I missed it https://review.openstack.org/#/c/417457/3/magnum/drivers/k8s_fedora_ironic_v1/image/kubernetes/package-installs.yaml
Ok we should update the image. Also, i think we can start using python3 with this patch.

[OpenStack Infra (hudson-openstack)]

Change abandoned by yatin (<email address hidden>) on branch: master
Review: https://review.openstack.org/450240
Reason: Can pickup later if required.