Test for Release 3.0.3 mac osx signing

The signed version is uploaded to link below.

http://latestbuilds.hq.couchbase.com/3.0.3/3.0.3-1706/codesign

It needs to be downloaded from this link to run through Gatekeeper in Mavericks or Yosemite. Here are a few tests.

1. Install successfully with security level set to allow apps downloaded from "Mac App Store and identified developers" under Security & Privacy. This step verifies Couchbase identity.

2. Run some simple tests to verify everything installed properly.

3. Keep an eye for any pop-up with regard to software updates from Sparkle. Basically, we don't want any kind of noise from Sparkle. It's good as long as you don't see any weirdness.

We don't have a way to fully test update distribution for Sparkle. As a matter of fact, it doesn't look like we are using Sparkle to publish and distribute updates. We can possibly remove it in the next release.