Manually merge GoogleCloudPlatform#121 back due to refactor in Google…

…CloudPlatform#105

Merge pull request GoogleCloudPlatform#104 from Carrotman42/master

Set the UserAgent used when contacting the sqladmin API

Merge pull request GoogleCloudPlatform#77 from apelisse/use-alpine-ba…

…se-docker

Use alpine docker base image to get certificates

Merge pull request GoogleCloudPlatform#68 from Carrotman42/master

Fix panic when the region is omitted

Merge pull request GoogleCloudPlatform#66 from ankushagarwal/master

Bug fix: Create the directory first and then check using os.IsNotExist

Merge pull request GoogleCloudPlatform#51 from SamiHiltunen/typo-fix

fix typo in refreshCfg

Merge pull request GoogleCloudPlatform#29 from Carrotman42/dockerfile

Add support for building a docker container in build.sh