Use component's uuid as GreetMessage's uuid
use pre-defined const value `ActiveAppsTrimInterval` for apps trim interval
Avoid encoding ! characters in proxied requests

[#74653044]

Signed-off-by: Matthew Sykes <matthew.sykes@gmail.com>
Bump deps

  Include new yagnats with connect timeout

Signed-off-by: Joseph Palermo <jpalermo@pivotallabs.com>
Merge remote-tracking branch 'origin/pr/47'
In config's Process(), assert that "StartResponseDelayInterval" cannot be
greater than "DropletStaleThreshold" for avoiding possible routing
failure.