Update of new_labels.md on a bug and corresponding workaround in OpenShift 4.x
Update of new_labels.md on a bug and corresponding workaround in OpenShift 4.x

A new section is added to new_labels.md on a bug in OpenShift 4.x. The method of updating output image labels during the s2i build process is not possible currently in OpenShift 4.x and a corresponding workaround is described.
soltysh/source-to-image,coreydaley/source-to-image,openshift/source-to-image,coreydaley/source-to-image,gabemontero/source-to-image,soltysh/source-to-image,soltysh/source-to-image,coreydaley/source-to-image,gabemontero/source-to-image,gabemontero/source-to-image,soltysh/source-to-image,openshift/source-to-image,coreydaley/source-to-image,gabemontero/source-to-image,openshift/source-to-image