Remove extra loop in populate_network_choices

There is an extra loop in populate_network_choices in launch instance
workflow, this could be merged into one loop.

Change-Id: I03a988e95f23367ebc41fc13b7f08dfd2d9da9b7
Closes-bug: 1359026
Fix XSS issue with the unordered_list filter

When using the unordered_list filter in a Horizon table (as opposed to
a template directly), autoescaping is not set by default and the input
wasn't sanitised.

Closes-Bug: #1349491
Change-Id: Id82eefe48ccb17a158751ec65d24f3ac779380ec
Min Disk and RAM fields not allow negatives

Change-Id: I643cdee41ef610eb32768d37e6b9b209d0286a7f
Closes-bug: 1358796
Merge "Fix XSS issue with the unordered_list filter"
Merge "Remove extra loop in populate_network_choices"
Merge "Min Disk and RAM fields not allow negatives"