install.sh should not abort if openshift olm is not installed
install.sh should not abort if openshift olm is not installed

fixes: https://github.com/operator-framework/operator-lifecycle-manager/issues/2210
Signed-off-by: John Mazzitelli <a54aae760072825ca6733a7dfc4aa39211f100a9@redhat.com>

operator-framework/operator-lifecycle-manager,operator-framework/operator-lifecycle-manager