satellite/analytics: Associate Hubspot token with new user

If a visitor has accepted cookies on www.storj.io, there might be a
"hubspotutk" cookie in their browser upon account creation. This allows
Hubspot to link website activity with a newly created user.

Change-Id: If06c67fb4d2e5dd3cf46c1fe80a0e9d7f25d6e58

satellite/analytics/hubspot.go

@@ -100,18 +100,27 @@ func (q *HubSpotEvents) EnqueueCreateUser(fields TrackCreateUserFields) {
 		firstName = fullName
 	}
 
+	newField := func(name, value string) map[string]interface{} {
+		return map[string]interface{}{
+			"name":  name,
+			"value": value,
+		}
+	}
+
 	createUser := HubSpotEvent{
-		Endpoint: "https://api.hubapi.com/crm/v3/objects/contacts?hapikey=" + q.escapedAPIKey,
+		Endpoint: "https://api.hsforms.com/submissions/v3/integration/submit/20293085/77cfa709-f533-44b8-bf3a-ed1278ca3202?hapikey=" + q.escapedAPIKey,
 		Data: map[string]interface{}{
-			"email": fields.Email,
-			"properties": map[string]interface{}{
-				"email":           fields.Email,
-				"firstname":       firstName,
-				"lastname":        lastName,
-				"lifecyclestage":  "customer",
-				"origin_header":   fields.OriginHeader,
-				"signup_referrer": fields.Referrer,
-				"account_created": true,
+			"context": map[string]interface{}{
+				"hutk": fields.HubspotUTK,
+			},
+			"fields": []map[string]interface{}{
+				newField("email", fields.Email),
+				newField("firstname", firstName),
+				newField("lastname", lastName),
+				newField("lifecyclestage", "customer"),
+				newField("origin_header", fields.OriginHeader),
+				newField("signup_referrer", fields.Referrer),
+				newField("account_created", "true"),
 			},
 		},
 	}

satellite/analytics/service.go

@@ -113,6 +113,7 @@ type TrackCreateUserFields struct {
 	HaveSalesContact bool
 	OriginHeader     string
 	Referrer         string
+	HubspotUTK       string
 }
 
 func (service *Service) enqueueMessage(message segment.Message) {

satellite/console/consoleweb/consoleapi/auth.go

@@ -286,6 +286,12 @@ func (a *Auth) Register(w http.ResponseWriter, r *http.Request) {
 		if referrer == "" {
 			referrer = r.Referer()
 		}
+		hubspotUTK := ""
+		hubspotCookie, err := r.Cookie("hubspotutk")
+		if err == nil {
+			hubspotUTK = hubspotCookie.Value
+		}
+
 		trackCreateUserFields := analytics.TrackCreateUserFields{
 			ID:           user.ID,
 			AnonymousID:  loadSession(r),
@@ -294,6 +300,7 @@ func (a *Auth) Register(w http.ResponseWriter, r *http.Request) {
 			Type:         analytics.Personal,
 			OriginHeader: origin,
 			Referrer:     referrer,
+			HubspotUTK:   hubspotUTK,
 		}
 		if user.IsProfessional {
 			trackCreateUserFields.Type = analytics.Professional