MM-21898: Part 2. Add opentracing (#13904)

* initial implementation of opentracing

* app layer

* Revert Makefile

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* cleanup

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* [ci]

* autogenerate interface

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* missed vendor files

* updated interfaces

* updated store layers

* lint fixes

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* finishing layer generators and nested spans

* added errors and b3 support

* code review

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* fixed build error due to misplased flag.Parse()

* code review addressed

store/sqlstore/supplier.go

@@ -111,6 +111,7 @@ type SqlSupplier struct {
 	stores         SqlSupplierStores
 	settings       *model.SqlSettings
 	lockedToMaster bool
+	context        context.Context
 }
 
 type TraceOnAdapter struct{}
@@ -266,6 +267,14 @@ func setupConnection(con_type string, dataSource string, settings *model.SqlSett
 	return dbmap
 }
 
+func (ss *SqlSupplier) SetContext(context context.Context) {
+	ss.context = context
+}
+
+func (ss *SqlSupplier) Context() context.Context {
+	return ss.context
+}
+
 func (ss *SqlSupplier) initConnection() {
 	ss.master = setupConnection("master", *ss.settings.DataSource, ss.settings)