review: don't crash if set-reviewers fails
review: don't crash if set-reviewers fails

Change-Id: I8afdc6a199ced68efc7e835f9129e6787aafbfed
Reviewed-on: http://gerrit.aldebaran.lan/59832
Tested-by: gerrit
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

aldebaran/qibuild,aldebaran/qibuild,aldebaran/qibuild,aldebaran/qibuild