Dubey | 000 | Return correlation id for request as part of response h…

…eaders (#117)

src/main/java/in/projecteka/gateway/CorrelationIDFilter.java

@@ -32,6 +32,7 @@ public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
                     MDC.put(CORRELATION_ID, correlationId);
                     Context contextTmp = context.put(CORRELATION_ID, correlationId);
                     exchange.getAttributes().put(CORRELATION_ID, correlationId);
+                    exchange.getResponse().getHeaders().add(CORRELATION_ID, correlationId);
                     return contextTmp;
                 });
     }