Fix CI for LDAS workflow (#34)

Author: gmao-rreichle

.circleci/config.yml

@@ -22,4 +22,6 @@ workflows:
           repo: GEOSldas
           checkout_fixture: true
           mepodevelop: false
+          # This is needed due to the LDAS BRIDGE workflow
+          checkout_if_exists: false
           persist_workspace: false # Needs to be true to run fv3/gcm experiment, costs extra