Add loggregator v2 configuration properties to all Diego components
Add loggregator v2 configuration properties to all Diego components

* Properties consumed from property_overrides.loggregator

[finishes #149067715]

Signed-off-by: Danny Cao <5ffc8b7cff3b9f2acb630fd157ff837ced3278ae@us.ibm.com>

cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release