CBLT-82:  modify for jenkins environment

Change-Id: I1feb290b21e000707d52fa2b61659f261aa7c3e3
CBLT-82:  want couchbase-sync-gateway_0.0-7_macosx-x86_64.tar.gz

Change-Id: I2e1a4691b05d066f69ba0a18fc9719d696d484b2
CBLT-82:  Merge: also build for macosx, as a tarball, on any node

* exp-plabee-002:
  CBLT-82:  want couchbase-sync-gateway_0.0-7_macosx-x86_64.tar.gz
  CBLT-82:  modify for jenkins environment