Added the init() method to the shadow backend and SQL backend code (#365

)

* Added the init() method to the shadow backend code

* Removing .swp file

* Added init method to sql backend as well

---------

Co-authored-by: Gaurav Kumar <gauravk@uber.com>

lib/backend/shadowbackend/client.go

@@ -30,10 +30,16 @@ import (
 	"gopkg.in/yaml.v2"
 )
 
+const _shadow = "shadow"
+
+func init() {
+	backend.Register(_shadow, &factory{})
+}
+
 type factory struct{}
 
 func (f *factory) Name() string {
-	return "shadow"
+	return _shadow
 }
 
 func (f *factory) Create(

lib/backend/sqlbackend/client.go

@@ -33,6 +33,10 @@ import (
 
 const _sql = "sql"
 
+func init() {
+	backend.Register(_sql, &factory{})
+}
+
 type factory struct{}
 
 func (f *factory) Name() string {