[#749] cleanup .gitignore file for new ERA/microservices/obj directory
[#749] cleanup .gitignore file for new ERA/microservices/obj directory

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