Replace metron_agent with loggregator_agent [#156048700]

Signed-off-by: Iryna Shustava <ishustava@pivotal.io>

Author: njbennett

cf-deployment.yml

@@ -1702,6 +1702,10 @@ releases:
   url: https://bosh.io/d/github.com/cloudfoundry/uaa-release?v=59
   version: "59"
   sha1: 6aa5cd78892f4ea09070c0cf5155aa7a12c17d13
+- name: loggregator-agent
+  url: https://bosh.io/d/github.com/cloudfoundry/loggregator-agent-release?v=1.0
+  version: "1.0"
+  sha1: aa70e3bc95e25fe86ab00f3b698216a24a44c9d5
 stemcells:
 - alias: default
   os: ubuntu-trusty