simplify spring demo

add more refresh scope sample

support appid with dot

add RefreshScope demo

add Docker Support

Bugfix: check application namespace existed

EnvUtils add transform tools env

use RestTemplateFactory to create rest template

use RestTemplateFactory to create rest template, which will respect the api.connectTimeout and api.readTimeout settings in PortalConfig

Bugfix: relative date format calculate error

version to 0.8.0

Revert tomcat custom validator

This reverts commit f6816a26.

This reverts commit 037e0036.

Optimize gc

misc changes

1. add log output to console for config and admin service
2. remove dev, lpt, tooling logic
3. add default 2 seconds of initial delay to long polling