ceph: force upper case for Operator log level

When the operator configmap is edited, it is likely that some user will
simply put "debug" instead of "DEBUG", so let's always transform the
value to upper case to ease user experience.

Signed-off-by: Sébastien Han <seb@redhat.com>

pkg/operator/ceph/operator.go

@@ -21,6 +21,7 @@ import (
 	"context"
 	"os"
 	"os/signal"
+	"strings"
 	"syscall"
 
 	"github.com/coreos/pkg/capnslog"
@@ -109,7 +110,7 @@ func (o *Operator) updateOperatorLogLevel() error {
 		rookLogLevel = "INFO"
 	}
 
-	logLevel, err := capnslog.ParseLevel(rookLogLevel)
+	logLevel, err := capnslog.ParseLevel(strings.ToUpper(rookLogLevel))
 	if err != nil {
 		return errors.Wrapf(err, "failed to load ROOK_LOG_LEVEL %q.", rookLogLevel)
 	}