Improve Ensembl config
Improve Ensembl config

Increase the memory for Ensembl jobs as some need more than the normal
1GB. Also, some organisms we can get from MOD's so we don't pull them
from Ensembl.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline