Added Spring Security with Keycloak support

Author: pavankjadda

src/main/java/com/pj/keycloak/security/Role.java renamed to src/main/java/com/pj/keycloak/security/Roles.java

@@ -1,10 +1,10 @@
 package com.pj.keycloak.security;
 
-class Role
+class Roles
 {
     static final String ADMIN="admin";
 
-    private Role()
+    private Roles()
     {
 
     }

src/main/java/com/pj/keycloak/security/SecurityConfig.java

@@ -50,7 +50,7 @@ protected void configure(HttpSecurity http) throws Exception
 
         http.authorizeRequests()
                 .antMatchers("/api/**")
-                .hasAnyRole(Role.ADMIN)
+                .hasAnyRole(Roles.ADMIN)
                 .anyRequest()
                 .permitAll();
     }