Add public_key to the "vl" method response:

The "/vl" HTTP endpoint can be used to request a particular
UNL from a rippled instance.

This commit, if merged, includes the public key of the requested
list in the response.

This commit fixes #3392

src/ripple/app/misc/impl/ValidatorList.cpp

@@ -820,10 +820,11 @@ ValidatorList::getAvailable(boost::beast::string_view const& pubKey)
 
  Json::Value value(Json::objectValue);
 
- value["manifest"] = iter->second.rawManifest;
- value["blob"] = iter->second.rawBlob;
- value["signature"] = iter->second.rawSignature;
- value["version"] = iter->second.rawVersion;
+ value[jss::public_key] = std::string{pubKey};
+ value[jss::manifest] = iter->second.rawManifest;
+ value[jss::blob] = iter->second.rawBlob;
+ value[jss::signature] = iter->second.rawSignature;
+ value[jss::version] = iter->second.rawVersion;
 
  return value;
 }

src/ripple/protocol/jss.h

@@ -142,6 +142,7 @@ JSS(base_fee_xrp); // out: NetworkOPs
 JSS(bids); // out: Subscribe
 JSS(binary); // in: AccountTX, LedgerEntry,
  // AccountTxOld, Tx LedgerData
+JSS(blob); // out: ValidatorList
 JSS(books); // in: Subscribe, Unsubscribe
 JSS(both); // in: Subscribe, Unsubscribe
 JSS(both_sides); // in: Subscribe, Unsubscribe

src/test/app/ValidatorList_test.cpp

@@ -26,6 +26,7 @@
 #include <ripple/protocol/SecretKey.h>
 #include <ripple/protocol/Sign.h>
 #include <ripple/protocol/digest.h>
+#include <ripple/protocol/jss.h>
 #include <test/jtx.h>
 
 namespace ripple {
@@ -570,6 +571,21 @@ class ValidatorList_test : public beast::unit_test::suite
  BEAST_EXPECT(trustedKeys->listed(val.signingPublic));
  }
 
+ const auto hexPublic =
+ strHex(publisherPublic.begin(), publisherPublic.end());
+
+ const auto available = trustedKeys->getAvailable(hexPublic);
+
+ if (BEAST_EXPECT(available))
+ {
+ auto const& a = *available;
+ BEAST_EXPECT(a[jss::public_key] == hexPublic);
+ BEAST_EXPECT(a[jss::blob] == blob2);
+ BEAST_EXPECT(a[jss::manifest] == manifest1);
+ BEAST_EXPECT(a[jss::version] == version);
+ BEAST_EXPECT(a[jss::signature] == sig2);
+ }
+
  // do not re-apply lists with past or current sequence numbers
  BEAST_EXPECT(
  ListDisposition::stale ==