BAEL-5300: add security config

spring-cloud/spring-cloud-openfeign/src/main/java/com/baeldung/cloud/openfeign/oauthfeign/OAuth2WebSecurityConfigurerAdapter.java

@@ -0,0 +1,19 @@
+package com.baeldung.cloud.openfeign.oauthfeign;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+
+@Configuration
+public class OAuth2WebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter {
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        http
+            .csrf()
+            .disable()
+            .oauth2Client();
+        http
+            .authorizeRequests().anyRequest().permitAll();
+    }
+}