Fix: delete app/app, use apl 2.0

cluster/loadbalance/least_active_test.go

...er/dubbo/with-configcenter-go-client/assembly/bin/load.sh

...ubbo/with-configcenter-go-client/assembly/common/build.sh

...er/dubbo/with-configcenter-go-server/assembly/bin/load.sh

...ubbo/with-configcenter-go-server/assembly/common/build.sh

.../jsonrpc/with-configcenter-go-client/assembly/bin/load.sh

...nrpc/with-configcenter-go-client/assembly/common/build.sh

.../jsonrpc/with-configcenter-go-server/assembly/bin/load.sh

...nrpc/with-configcenter-go-server/assembly/common/build.sh

examples/general/dubbo/go-client/assembly/bin/load.sh

examples/general/dubbo/go-client/assembly/common/build.sh

examples/general/dubbo/go-server/assembly/bin/load.sh

examples/general/dubbo/go-server/assembly/common/build.sh

examples/general/dubbo/java-client/build.sh

...ava-client/src/main/resources/META-INF/spring/service.xml

examples/general/dubbo/java-server/build.sh

examples/general/jsonrpc/go-client/assembly/bin/load.sh

examples/general/jsonrpc/go-client/assembly/common/build.sh

examples/general/jsonrpc/go-server/assembly/bin/load.sh

examples/general/jsonrpc/go-server/assembly/common/build.sh