Add Google builder to suggested builders

[jromero]

Also:

• Clean up acceptance logging
• Sort builders by vendor instead of image name

Resolves #635

Output

$ ./out/pack suggest-builders

Suggested builders:
        Google:                gcr.io/buildpacks/builder                    GCP Builder for all runtimes                                                                   
        Heroku:                heroku/buildpacks:18                         heroku-18 base image with buildpacks for Ruby, Java, Node.js, Python, Golang, & PHP            
        Paketo Buildpacks:     gcr.io/paketo-buildpacks/builder:base        Ubuntu bionic base image with buildpacks for Java, NodeJS and Golang                           
        Paketo Buildpacks:     gcr.io/paketo-buildpacks/builder:full-cf     cflinuxfs3 base image with buildpacks for Java, .NET, NodeJS, Golang, PHP, HTTPD and NGINX     
        Paketo Buildpacks:     gcr.io/paketo-buildpacks/builder:tiny        Tiny base image (bionic build image, distroless run image) with buildpacks for Golang          

Tip: Learn more about a specific builder with:
        pack inspect-builder <builder-image>

[codecov]

Codecov Report

Merging #637 into master will decrease coverage by 0.18%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #637      +/-   ##
==========================================
- Coverage   70.42%   70.25%   -0.17%     
==========================================
  Files          67       67              
  Lines        4665     4671       +6     
==========================================
- Hits         3285     3281       -4     
- Misses       1062     1072      +10     
  Partials      318      318              

Flag	Coverage Δ
#os_linux	72.88% <100.00%> (-0.22%)	⬇️
#os_macos	68.86% <100.00%> (-0.22%)	⬇️
#os_windows	68.79% <100.00%> (-0.17%)	⬇️
#unit	70.25% <100.00%> (-0.17%)	⬇️

[jromero]

@lukasberger / @dgageot please let us know if this is not something you'd prefer.