Add keploy to arkade get

Changelog for 0.11.22:

• PR #1104 Add keploy via arkade by @Sonichigo

Commits
2c0eb21 Fix faulty tests merged via #1104 for keploy by @alexellis
1020843 feat: add keploy to arkade by @Sonichigo

Changes: 0.11.21...0.11.22

Generated by Derek