Description of problem:
Exporting a mistral environment with "mistral environment-get -f yaml (or json) overcloud > overcloud.yaml " and trying to update the overcloud environment with "mistral environment-update overcloud.yaml" fails on the name key being missing.   Exporting the values seems to export the keys with the first letter of the key capitalized such as "Name" for instance and when trying to import it back, it fails because it's not called "name" ...  

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. mistral environment-get -f yaml overcloud > overcloud.yaml
2. mistral environment-update overcloud.yaml
3.

Actual results:
Fails finding "name"

Expected results:
Should find it...  If I fix "Name" to "name", it then fails to update the environment because the key "Created at" and "Updated at" are not allowed keys.   Perhaps we should simply overlook those 2 keys.

Additional info: