satellite/analytics: Add user agent to TrackCreateUser

Send UserAgent (as "signup_partner") to Segment and Hubspot.

Change-Id: I3313eb902e87b429e7fa8e18afd397a63a3ed07d

satellite/analytics/hubspot.go

@@ -123,6 +123,7 @@ func (q *HubSpotEvents) EnqueueCreateUser(fields TrackCreateUserFields) {
 				newField("signup_referrer", fields.Referrer),
 				newField("account_created", "true"),
 				newField("have_sales_contact", strconv.FormatBool(fields.HaveSalesContact)),
+				newField("signup_partner", fields.UserAgent),
 			},
 		},
 	}

satellite/analytics/service.go

@@ -140,6 +140,7 @@ type TrackCreateUserFields struct {
 	OriginHeader     string
 	Referrer         string
 	HubspotUTK       string
+	UserAgent        string
 }
 
 func (service *Service) enqueueMessage(message segment.Message) {
@@ -179,6 +180,9 @@ func (service *Service) TrackCreateUser(fields TrackCreateUserFields) {
 	if fields.Type == Professional {
 		traits.Set("have_sales_contact", fields.HaveSalesContact)
 	}
+	if len(fields.UserAgent) > 0 {
+		traits.Set("signup_partner", fields.UserAgent)
+	}
 
 	service.enqueueMessage(segment.Identify{
 		UserId:      fields.ID.String(),

satellite/console/consoleweb/consoleapi/auth.go

@@ -303,6 +303,7 @@ func (a *Auth) Register(w http.ResponseWriter, r *http.Request) {
 			OriginHeader: origin,
 			Referrer:     referrer,
 			HubspotUTK:   hubspotUTK,
+			UserAgent:    string(user.UserAgent),
 		}
 		if user.IsProfessional {
 			trackCreateUserFields.Type = analytics.Professional