configure public key and related license variables at build time (#22202)

Instead of being completely hardcoded, public key is now set at build time according to build tag (test key if `testlicensekey` tag is passed to go build, production key otherwise). A `isProdLicensePublicKey` is also available for determining if the prod license key is being used. It is needed for choosing whether to point to production or test environment CWS.

The test license key and CWS url values in this value are set to production values in this PR, but will be updated to the test values once we are ready to do the necessary updates to test environment spinwicks.

app/platform/license.go

@@ -23,14 +23,9 @@ import (
 
 const (
 	LicenseEnv                = "MM_LICENSE"
-	LicenseRenewalURL         = "https://customers.mattermost.com/subscribe/renew"
 	JWTDefaultTokenExpiration = 7 * 24 * time.Hour // 7 days of expiration
 )
 
-var (
-	RequestTrialURL = "https://customers.mattermost.com/api/v1/trials"
-)
-
 // JWTClaims custom JWT claims with the needed information for the
 // renewal process
 type JWTClaims struct {
@@ -302,7 +297,7 @@ func (ps *PlatformService) RequestTrialLicense(trialRequest *model.TrialLicenseR
 		return model.NewAppError("RequestTrialLicense", "api.unmarshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
 	}
 
-	resp, err := http.Post(RequestTrialURL, "application/json", bytes.NewBuffer(trialRequestJSON))
+	resp, err := http.Post(ps.getRequestTrialURL(), "application/json", bytes.NewBuffer(trialRequestJSON))
 	if err != nil {
 		return model.NewAppError("RequestTrialLicense", "api.license.request_trial_license.app_error", nil, "", http.StatusBadRequest).Wrap(err)
 	}
@@ -379,6 +374,13 @@ func (ps *PlatformService) GenerateLicenseRenewalLink() (string, string, *model.
 	if err != nil {
 		return "", "", err
 	}
-	renewalLink := LicenseRenewalURL + "?token=" + renewalToken
-	return renewalLink, renewalToken, nil
+	return fmt.Sprintf("%s?token=%s", ps.getLicenseRenewalURL(), renewalToken), renewalToken, nil
+}
+
+func (ps *PlatformService) getLicenseRenewalURL() string {
+	return fmt.Sprintf("%s/subscribe/renew", *ps.Config().CloudSettings.CWSURL)
+}
+
+func (ps *PlatformService) getRequestTrialURL() string {
+	return fmt.Sprintf("%s/api/v1/trials", *ps.Config().CloudSettings.CWSURL)
 }