slapos_cloud: Include API to renew the certificates

See merge request !377
3 jobs for master in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

01:24:53

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:51

passed SlapOS.Eggs.UnitTest-Master.Python3

00:24:54