Add: Go modules support

1. Update: LDAP to V3
2. Update: github.com/gocraft/dbr to v2
3. Update: Redis to v7
4. Update: Dependencies
5. Fix: Breaking changes, remove the dependency of old coreoespackage.
6. Add: Go mod
7. Remove: Previous Gopkg

https://sprint.mkcl.org/zentao/task-view-382.html

authmdl/ldapmdl/ldapmdl.go

@@ -8,7 +8,7 @@ import (
 	"corelab.mkcl.org/MKCLOS/coredevelopmentplatform/corepkgv2/configmdl"
 	"corelab.mkcl.org/MKCLOS/coredevelopmentplatform/corepkgv2/errormdl"
 	"corelab.mkcl.org/MKCLOS/coredevelopmentplatform/corepkgv2/loggermdl"
-	ldap "gopkg.in/ldap.v2"
+	ldap "github.com/go-ldap/ldap/v3"
 )
 
 /*