* feat(gateway): add gateway application
* chore(gateway): add normalize confs function
* refactor: move emqx-stomp to emqx-gateway subdir
* chore(gateway): fix some bad function defination
* chore(gateway): rename type to gwid
* chore(gw-stomp): upgrade the implementation to suppport gateway instance
* feat(gw-stomp): add reconnect mechanism
* refactor(stomp): upgrade connection&channel module to latest
* refactor(stomp): more details for handle_in/out
* refactor(stomp): get it up and running
* chore(gw): load some modules by default
* refactor: upgrade the emqx-gateway schema module
* test(stomp): fix testcases for stomp gateway
* chore(gw): remove needless lines
* chore(gateway): correct a lot of specs
* chore(gw): add a draft for metrics
* chore(gw): add metrics process
* fix(gw): fix cm process monitor
* test(gw): add test cases for gateway-regitry
* feat(gw): add metrics/cli for gateway
* fix(gw): fix xref errors
* chore(gw): pretty gateway metrics print format
* chore(gw-stomp): generate clientid by default
* chore(gw): more reliable
* chore(gw): rename gwid -> type
* chore(gw): impl the update logic
* chore(gw): some format improvement
* chore(gw): adapts the hocon configs
* fix(gw): fix xref errors
* test(gw): update configurations for tests
* chore(gw): ignore diaylzer warnings
* fix(gw): fix bad function call
* chore(gw): remove needless comments
* refator(config_handler): handle and validate the updates to raw_configs
* fix(hocon): update hocon to 0.8.0
* refactor(config_handler): check and apply envs only in top-level handler
* refactor(config_handler): update config from top level to bottom level
* refactor(emqx_data_bridge): move configs to emqx.conf
* fix(emqx_schema): remove the extra config path
* fix(config_handler): load the emqx.conf when starting emqx_config_handler
* fix(data_bridge): API not working
* feat(config_handler): save updated configs to emqx_override.conf
* fix(config_handler): cannot find the emqx.conf and emqx_override.conf
* fix(emqx_config): cannot find the correct path for etc dir
* fix(test): load load emqx_schema foreign refereced apps
* refactor(emqx_plugin): do not generate configs before load plugins
All configs (including the configs for plugins) now should go into
the `emqx.conf`.
* fix(tests): update the test cases for plugins
* fix(tests): don't include schema from apps when testing
* fix(tests): use emqx-ct-helper branch hocon
* feat(authorization): add authorization api
* feat(authorization): add check function
* feat(authorization): use hocon config file
* feat(authz): add mysql connector
* feat(authz): support pgsql
* feat(connector): support redis
* chore(authz): use "publish/subscribe/all" instead of "pub/sub/pubsub"
* refator(config_handler): handle and validate the updates to raw_configs
* fix(hocon): update hocon to 0.8.0
* refactor(config_handler): check and apply envs only in top-level handler
* refactor(config_handler): update config from top level to bottom level
* refactor(emqx_data_bridge): move configs to emqx.conf
* fix(emqx_schema): remove the extra config path
* fix(config_handler): load the emqx.conf when starting emqx_config_handler
* fix(data_bridge): API not working
* feat(config_handler): save updated configs to emqx_override.conf
* fix(config_handler): cannot find the emqx.conf and emqx_override.conf
* fix(emqx_config): cannot find the correct path for etc dir
* fix(test): load load emqx_schema foreign refereced apps
* refactor(emqx_plugin): do not generate configs before load plugins
All configs (including the configs for plugins) now should go into
the `emqx.conf`.
* fix(tests): update the test cases for plugins
* fix(tests): don't include schema from apps when testing
* fix(tests): use emqx-ct-helper branch hocon
JianBo He