Set prerelease to false after uploading artifacts

Changelog for 0.5.11:

Generated by Derek

Add hashgen to releases

Changelog for 0.5.10:

Generated by Derek

Update for CI testing

Changelog for 0.5.9:

Generated by Derek

Update for metrics-server destination namespace

Changelog for 0.5.8:

• PR #78 Fix installation of metrics-server app by @jeka
• PR #82 Make get.sh generic for cross repo sharing by @rgee0

Generated by Derek

Fix issue with using wrong helm binary

Changelog for 0.5.7:

Generated by Derek

Update helm to version v2.15.2

Changelog for 0.5.6:

• PR #84 Update helm version to v2.15.2 by @alexellis

Generated by Derek

Move to v1 of execute package

Changelog for 0.5.5:

Generated by Derek

Add generic installer for "chart" and app for tiller

Changelog:

• Added generic installer for "chart" and app for tiller

Encode parameters for the metrics-server

Changelog for 0.5.3:

Generated by Derek

Add flag for when where sudo not available

Changelog:

• Add flag for when where sudo not available --sudo false #70 thanks @Hades32 🎉