component/ca-certificates: Fix sbin location

The / is needed, in order to put the sbin inside DESTDIR instead of wrongly
creating DESTDIRsbin.
11 jobs for 1.0
Status Job ID Name Coverage
  External
failed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:50:16

failed ERP5.StandaloneDeploymentScriptTest-Debian.Buster.Master

passed SlapOS-Master.StandaloneDeploymentScriptTest-Debian.Buster

00:31:53

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python3

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:29:24

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

15:02:14

failed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:28:08

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

15:02:11