This reverts commit 99ed78fb.

# Conflicts:
#	go.mod
#	go.sum

Ftr: add sentinel-golang  flow control/circuit breaker
# Conflicts:
#	go.sum

Ftr: File system service discovery

* support attachment from map[sting]string to map[string]interface{} in invocation and result
# Conflicts:
#	cluster/router/tag/tag_router.go

* support attachment from map[sting]string to map[string]interface{} in invocation and result

code clean