Fix coverage flag for test command
Fix coverage flag for test command

Signed-off-by: Johannes M. Scheuermann <84221072773eb526ff46440bf01afde36bd32e36@gmail.com>

tsandall/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa