add known user

fixes #1880 pagination not work

feature: support listeners on events based on key patterns. #1461

upgrade to mockito 2.x version

* Enhancement: validates http parameters using javax.validation api

* remove unnecessary validation

do not allow user to create private app namespace with the same name as some public app namespace

add known user

* enhancement: validates http parameters using javax.validation api

* improve code quality according Codacity

* update as requested

* update according to Codacy

* change the logic of the 'by-owner' request

* test extractAppIdFromRoleName

* enhancement: use constructor injection instead of field injection

* remove unused field

style: using XxxMapping shortcut

implement Ordered for ApolloApplicationContextInitializer

add comment for eureka.client.serviceUrl