Chown the datastore dir to vcap:vcap
Chown the datastore dir to vcap:vcap

This resolves an issue that is introduced when you deploy the release
using an ubuntu stemcell and then update it to use a centos stemcell

[Finishes #63218488]

cloudfoundry/cf-mysql-release,ruanbinfeng/cf-mysql-release,kbastani/cf-mysql-release,krishna-mk/cf-mysql-release,ruanbinfeng/cf-mysql-release,CloudCredo/cf-mysql-release,cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release,CloudCredo/cf-mysql-release,ruanbinfeng/cf-mysql-release,krishna-mk/cf-mysql-release,kbastani/cf-mysql-release,kbastani/cf-mysql-release,CloudCredo/cf-mysql-release,krishna-mk/cf-mysql-release,ruanbinfeng/cf-mysql-release,cloudfoundry/cf-mysql-release