[Sahara] Create Cluster Template method ignores first added nodes group

[Vadim Rovachev]

Precondition steps:
Installed OpenStack with Sahara.
Opened Horizon
Added a few Node Group templates(any plugin and version)

Steps to reproduce:
1. Open tab for Create Cluster Template
2. Choose plugin and version
3. Add Template name
4. Go to "Node Groups" tab
5. Add some Node Group Templates (e.g. "vanilla-master", "vanilla-worker")
6. Click "Create" button

Expected result: Created Cluster Template with Node Group Templates "vanilla-master", "vanilla-worker"
Actual result: Created Cluster Template with only one Node Group Template(if in 5 step "vanilla-master" added in first time, then this template would absent)

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If in 5 step add only one Node Group Template, then Cluster Template will not have Node Group Templates

[Vadim Rovachev (vrovachev)]

dublicate https://bugs.launchpad.net/horizon/+bug/1364648