Improve support for deployment on localhost
Created by: mkszuba
1.Change $USER to ${USER} in main_local.yml Having no curly brances around the variable name makes in this case no difference to Ansible itself but causes problems when Ansible attempts to compile variation C tools - make treats $USER as $(U)SER and with $U not having been set, ends up looking for htslib files in /home/SER/... .
See-also: https://www.ebi.ac.uk/panda/jira/browse/ENSCORESW-2807