libbs Update

This change updates the buildpack to use libbs which removes duplication of
build-system common behaviors.

Signed-off-by: Ben Hale <bhale@pivotal.io>

go.mod

@@ -4,11 +4,8 @@ go 1.14
 
 require (
 	github.com/buildpacks/libcnb v1.8.0
-	github.com/magiconair/properties v1.8.1
-	github.com/mattn/go-shellwords v1.0.10
 	github.com/onsi/gomega v1.9.0
-	github.com/paketo-buildpacks/libjvm v1.10.4
+	github.com/paketo-buildpacks/libbs v1.0.0
 	github.com/paketo-buildpacks/libpak v1.27.5
 	github.com/sclevine/spec v1.4.0
-	github.com/stretchr/testify v1.5.1
 )

go.sum

@@ -45,6 +45,8 @@ github.com/onsi/ginkgo v1.12.0/go.mod h1:oUhWkIvk5aDxtKvDDuw8gItl8pKl42LzjC9KZE0
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.9.0 h1:R1uwffexN6Pr340GtYRIdZmAiN4J+iw6WG4wog1DUXg=
 github.com/onsi/gomega v1.9.0/go.mod h1:Ho0h+IUsWyvy1OpqCwxlQ/21gkhVunqlU8fDGcoTdcA=
+github.com/paketo-buildpacks/libbs v1.0.0 h1:DxsO+0FkgAr8FC+/6CSA8QSeQ8ncI7wNFt0L1m8M/ho=
+github.com/paketo-buildpacks/libbs v1.0.0/go.mod h1:PSwqXBDCznpGgNao/L/qbhrZiIV7qrtYFavZ0FrA/DI=
 github.com/paketo-buildpacks/libjvm v1.10.4 h1:JXXiypzBzW72v3lERdQzAmbvgGd68UEpnjJTBJiel4M=
 github.com/paketo-buildpacks/libjvm v1.10.4/go.mod h1:Erul55CiZ3hTd9m/dJ1MV0tfa+86pnYIOEUQSbn39jc=
 github.com/paketo-buildpacks/libpak v1.27.5 h1:gcYvzepgfYjl/Ae7lKqZGasVklC1y9cNAGF4AMPntJk=