handlers/common: use fmt.Errorf where applicable
handlers/common: use fmt.Errorf where applicable

Use fmt.Errorf(..) instead of errors.New(fmt.Sprintf(..)) where
applicable

Signed-off-by: Maciej Borzecki <f609d9f713abcd5f8f0e51f08dc151638a7681e7@open-rnd.pl>

pasinskim/deployments,pasinskim/deployments,pasinskim/deployments,pasinskim/deployments