Misc improvement

Release key generator, eureka url config to db.

1. Add a release key generator to generate human-readable release keys
2. Add retry policy for client long polling
3. Move eureka url config to database

support eureka configuration with multiple envs

Update jenkins build

Update start script by leverage spring boot launch

Use database as MQ, change separator to +

update assembly

Update jenkins deploy script

Fix properties getDefault

Support build parameters by env

add public config support

fix

portal 优化

add miss envs

Bugfix service locator & change default namespace name to application

fix

Service refactor