Fail to install go-server when running test-kitchen on centos 7

[PandaXass]

$ bundle exec kitchen converge go-server-centos7

    Error: Execution of '/bin/yum -d 0 -e 0 -y install go-server' returned 1: warning: /var/cache/yum/x86_64/7/Thoughtworks/packages/go-server-16.9.0-4001.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 8816c449: NOKEY
   Public key for go-server-16.9.0-4001.noarch.rpm is not installed
   Importing GPG key 0x8816C449:
    Userid     : "ThoughtWorks GoCD (GoCD Code signing keys) <support@thoughtworks.com>"
    Fingerprint: 3222 59c8 2d30 82b3 e32a ec2e d884 3f28 8816 c449
    From       : https://download.go.cd/GOCD-GPG-KEY.asc
   useradd: cannot create directory /var/go
   error: %pre(go-server-16.9.0-4001.noarch) scriptlet failed, exit status 12
   Error in PREIN scriptlet in rpm package go-server-16.9.0-4001.noarch
   Error: /Stage[main]/Go::Server::Package/Package[go-server]/ensure: change from absent to present failed: Execution of '/bin/yum -d 0 -e 0 -y install go-server' returned 1: warning: /var/cache/yum/x86_64/7/Thoughtworks/packages/go-server-16.9.0-4001.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 8816c449: NOKEY
   Public key for go-server-16.9.0-4001.noarch.rpm is not installed
   Importing GPG key 0x8816C449:
    Userid     : "ThoughtWorks GoCD (GoCD Code signing keys) <support@thoughtworks.com>"
    Fingerprint: 3222 59c8 2d30 82b3 e32a ec2e d884 3f28 8816 c449
    From       : https://download.go.cd/GOCD-GPG-KEY.asc
   useradd: cannot create directory /var/go
   error: %pre(go-server-16.9.0-4001.noarch) scriptlet failed, exit status 12
   Error in PREIN scriptlet in rpm package go-server-16.9.0-4001.noarch

[jlyheden]

SELinux related to the vagrant image used for CentOS 7 testing. This will "fix" it:

echo 0 > /sys/fs/selinux/enforce

Either switch to a SELinux-disabled vagrant image or make sure this toggle is executed in the test harness before the go server puppet class.