[#2038] early exit if database does not already exist
[#2038] early exit if database does not already exist

PaulVanSchayck/irods,janiheikkinen/irods,leesab/irods,janiheikkinen/irods,PaulVanSchayck/irods,leesab/irods,PaulVanSchayck/irods,PaulVanSchayck/irods,PaulVanSchayck/irods,janiheikkinen/irods,janiheikkinen/irods,PaulVanSchayck/irods,PaulVanSchayck/irods,janiheikkinen/irods,janiheikkinen/irods,janiheikkinen/irods,leesab/irods,leesab/irods,leesab/irods,leesab/irods,janiheikkinen/irods,PaulVanSchayck/irods,janiheikkinen/irods,leesab/irods,PaulVanSchayck/irods