Fix typo in environment_config.yaml
Fix typo in environment_config.yaml

The regular expression for validating the ElasticSearch address was
invalid which breaks the Settings page in the Fuel UI.

Change-Id: Icee075193cd3ee5b1a50b06d6f90c0a522147eb4

stackforge/fuel-plugin-lma-collector,stackforge/fuel-plugin-lma-collector,stackforge/fuel-plugin-lma-collector,stackforge/fuel-plugin-lma-collector,stackforge/fuel-plugin-lma-collector