PLT-2899 adding clustering of app servers (#3682)

* PLT-2899 adding clustering of app servers

* PLT-2899 base framework

* PLT-2899 HA backend

* PLT-2899 Fixing config file

* PLT-2899 adding config syncing

* PLT-2899 set System console to readonly when clustering enabled.

* PLT-2899 Fixing publish API

* PLT-2899 fixing strings

utils/license.go

@@ -122,6 +122,7 @@ func getClientLicense(l *model.License) map[string]string {
 		props["LDAP"] = strconv.FormatBool(*l.Features.LDAP)
 		props["MFA"] = strconv.FormatBool(*l.Features.MFA)
 		props["SAML"] = strconv.FormatBool(*l.Features.SAML)
+		props["Cluster"] = strconv.FormatBool(*l.Features.Cluster)
 		props["GoogleSSO"] = strconv.FormatBool(*l.Features.GoogleSSO)
 		props["Office365SSO"] = strconv.FormatBool(*l.Features.Office365SSO)
 		props["Compliance"] = strconv.FormatBool(*l.Features.Compliance)