Convert deaagent/domain tests to Ginkgo

Signed-off-by: John Tuley <jtuley@pivotallabs.com>
Use appservice and store packages from loggregatorlib

Signed-off-by: John Tuley <jtuley@pivotallabs.com>
Update syslog drain urls in deaagent instead of loggregator

[#75741986]

Signed-off-by: Georg Apitz <georg@pivotallabs.com>
fix syslog drain after moving code into agent

- add explicit Connect() calls required by etcd upgrade

[#75741986]

Signed-off-by: Johannes Petzold <jpetzold@pivotallabs.com>