nix 1.5.1 as a Upstart service

Change-Id: I40568f76dc7c9dfcd1998cd5fc0015440a605320
updated metadata

Change-Id: I9ae55133ae24fa843bdde5cfc6cedae99185919d
upgrade to 1.5.2

Change-Id: I2069dc4b379d4355918cc8eb2c7ccaf43ce4411b