update docker image version to 0.9.0

version to 0.9.0

use java8 api to replace guava joining List to String

remove useless authentication codes

add more ConfigurationProperties sample

fix the build working directory issue

docker quick start and remove unnecessary files

prefer alpine in docker

fix no 'ps -p' option available when running with alpine

bugfix: build.bat add auth profile

add principal type check when get user info

clean code for isBlank

fix table case

fix schema

add default email for apollo user

support user email field

return users when search user keyword is empty

fix for spring security auth table case issue

fix potential conditional npe

support spring security auth

Add ConditionalOnProfile and ConditionalOnMissingProfile annotations

change update cache strategy to increment

change update cache strategy to increment

Config service cache and namespace name normalization

1. Enable config cache to improve config service performance, just set
config-service.cache.enab...

output ClassLoaderUtil exception to logger

Update CatEventType to TracerEventType