[keycloak-dev] Default admin password

Currently there are many things for initialization of master realm hardcoded in ApplianceBootstrap including the initial password of admin user. Maybe it's not so big issue as user is required to change admin password after first login, but still it's not ideal IMO because if someone access admin console faster than you, he can change admin password and gain full admin access. I wonder if we can improve this? At least adding initial admin password into keycloak-server.json may help a bit as people can change default value from "admin" to something else. wdyt? Marek