Add context timeouts for third-party requests

Avoid hanging a goroutine for a long time.

platform/geocode/autocomplete.go

@@ -3,6 +3,7 @@ package geocode
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/Gleipnir-Technology/nidus-sync/db/models"
 	"github.com/Gleipnir-Technology/nidus-sync/stadia"
@@ -17,6 +18,9 @@ type AutocompleteResult struct {
 }
 
 func Autocomplete(ctx context.Context, org *models.Organization, address string) ([]*AutocompleteResult, error) {
+	ctx, cancel := context.WithTimeout(ctx, 15*time.Second)
+	defer cancel()
+
 	req := stadia.RequestGeocodeAutocomplete{
 		Text: address,
 	}