Monitor and Update 2/3 support

[trozet]

No description provided.

[trozet]

@hzhou8 @dcbw @numansiddique @girishmg PTAL

Numan, I copied your schema changes in here blindly. Seems like a heavy change, did you get those from ovn-org/libovsdb?

[numansiddique]

@hzhou8 @dcbw @numansiddique @girishmg PTAL

Numan, I copied your schema changes in here blindly. Seems like a heavy change, did you get those from ovn-org/libovsdb?

Yeah. I just copied it from ovn-org/libovsdb AS IS.

We need that to figure out what is the type of each column to init the column values to default ones if not present in the initial dump.

[dcbw]

LGTM

[hzhou8]

Thanks @trozet ! I saw some build errors. Seems there are more dependencies not ported?

./native.go:112:26: na.schema.GetColumn undefined (type *DatabaseSchema has no field or method GetColumn)
./native.go:128:26: na.schema.GetColumn undefined (type *DatabaseSchema has no field or method GetColumn)
./ovs_integration_test.go:298:14: cannot use notifier (type Notifier) as type NotificationHandler in argument to ovs.Register:
	Notifier does not implement NotificationHandler (missing Update2 method)
./ovs_integration_test.go:329:14: cannot use notifier (type Notifier) as type NotificationHandler in argument to ovs.Register:
	Notifier does not implement NotificationHandler (missing Update2 method)
./ovs_integration_test.go:332:20: cannot use notifier (type Notifier) as type NotificationHandler in argument to ovs.Unregister:
	Notifier does not implement NotificationHandler (missing Update2 method)
./schema_test.go:129:10: unknown field 'Max' in struct literal of type ColumnType (but does have max)
./schema_test.go:130:10: unknown field 'Min' in struct literal of type ColumnType (but does have min)
./schema_test.go:137:10: unknown field 'Max' in struct literal of type ColumnType (but does have max)
./schema_test.go:138:10: unknown field 'Min' in struct literal of type ColumnType (but does have min)
./schema_test.go:145:10: unknown field 'Max' in struct literal of type ColumnType (but does have max)
./schema_test.go:145:10: too many errors
FAIL	github.com/ebay/libovsdb [build failed]