Thomas Herve 4bc832fb7d Fix exit code of validate-templates script
We didn't propagate the error properly in validate-templates, thus
exiting with 0 even when an error happened. We could also get a None
value when parsing environment files.

Change-Id: I005b1491c82db9d389b6176125563811ab2c83ba
2014-05-01 12:31:40 +02:00
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