[ENSCORESW-649]. Production now reports the Retry-After header.
[ENSCORESW-649]. Production now reports the Retry-After header.

This is bringing the changes to Retry-After specification to
the production server. Consider making users aware of this in the
user guide.

ens-lgil/ensembl-rest,ens-lgil/ensembl-rest,willmclaren/ensembl-rest,helensch/ensembl-rest,helensch/ensembl-rest,willmclaren/ensembl-rest,willmclaren/ensembl-rest,helensch/ensembl-rest,ens-lgil/ensembl-rest,ens-lgil/ensembl-rest,ens-lgil/ensembl-rest,helensch/ensembl-rest,helensch/ensembl-rest,willmclaren/ensembl-rest,willmclaren/ensembl-rest