Problem with RRTMGP on anvil

Tests of the alpha5-15 atm in fully coupled configurations, which include the RRTMGP radiation package, showed anomalous results on anvil. The exact same configurations on compy had reasonable results. Other cases using the exact same setup on anvil except not RRTMGP also had reasonable results, indicating a problem with RRTMGP on anvil. Please note that anvil by default uses the intel17 compiler, while compy the default is intel19. For details about the anomalous results, please see the confluence page for [20201110.alpha5-15.EC15to60E2r4.anvil](https://acme-climate.atlassian.net/wiki/spaces/EWCG/pages/2003107879/20201110.alpha5-15.EC15to60E2r4.anvil).