(Client) Add isMock to ResponseInfo Object

Summary:
per title

Note:
- This is a part of this PR: https://github.com/facebook/flipper/pull/488

Reviewed By: jknoxville

Differential Revision: D20474257

fbshipit-source-id: d2ac79d03ac67453bd67ecc46ace973be1590c04

android/plugins/network/src/main/java/com/facebook/flipper/plugins/network/NetworkFlipperPlugin.java

@@ -65,6 +65,7 @@ public class NetworkFlipperPlugin extends BufferingFlipperPlugin implements Netw
                     .put("status", responseInfo.statusCode)
                     .put("reason", responseInfo.statusReason)
                     .put("headers", toFlipperObject(responseInfo.headers))
+                    .put("isMock", responseInfo.isMock)
                     .put("data", toBase64(responseInfo.body))
                     .build();
 

android/plugins/network/src/main/java/com/facebook/flipper/plugins/network/NetworkReporter.java

@@ -55,6 +55,7 @@ public interface NetworkReporter {
     public String statusReason;
     public List<Header> headers = new ArrayList<>();
     public byte[] body;
+    public boolean isMock = false;
 
     public Header getFirstHeader(final String name) {
       for (Header header : headers) {