rollback to old api path for backward compatibility

application/src/main/java/org/thingsboard/server/controller/OAuth2Controller.java

@@ -75,7 +75,7 @@ public class OAuth2Controller extends BaseController {
     @ApiOperation(value = "Get OAuth2 clients (getOAuth2Clients)", notes = "Get the list of OAuth2 clients " +
             "to log in with, available for such domain scheme (HTTP or HTTPS) (if x-forwarded-proto request header is present - " +
             "the scheme is known from it) and domain name and port (port may be known from x-forwarded-port header)")
-    @PostMapping(value = "/noauth/oauth2/client")
+    @PostMapping(value = "/noauth/oauth2Clients")
     public List<OAuth2ClientLoginInfo> getOAuth2Clients(HttpServletRequest request,
                                                         @Parameter(description = "Mobile application package name, to find OAuth2 clients " +
                                                                 "where there is configured mobile application with such package name")

ui-ngx/src/app/core/auth/auth.service.ts

@@ -224,7 +224,7 @@ export class AuthService {
   }
 
   public loadOAuth2Clients(): Observable<Array<OAuth2ClientLoginInfo>> {
-    const url = '/api/noauth/oauth2/client?platform=' + PlatformType.WEB;
+    const url = '/api/noauth/oauth2Clients?platform=' + PlatformType.WEB;
     return this.http.post<Array<OAuth2ClientLoginInfo>>(url,
       null, defaultHttpOptions()).pipe(
       catchError(err => of([])),