change RequestID to RequestId

Change-Id: Icb426614f391d2828c906155a0d37fd7da7c13f8
diff --git a/tests/unit-tests/challenge-email.t.cpp b/tests/unit-tests/challenge-email.t.cpp
index b319040..ccf51cf 100644
--- a/tests/unit-tests/challenge-email.t.cpp
+++ b/tests/unit-tests/challenge-email.t.cpp
@@ -45,7 +45,7 @@
   auto identity = addIdentity(Name("/ndn/site1"));
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
-  RequestID requestId = {1,2,3,4,5,6,7,8};
+  RequestId requestId = {1,2,3,4,5,6,7,8};
   ca::RequestState request(Name("/ndn/site1"), requestId, RequestType::NEW, Status::BEFORE_CHALLENGE, cert, makeEmptyBlock(ndn::tlv::ContentType_Key));
 
   Block paramTLV = makeEmptyBlock(tlv::EncryptedPayload);
@@ -95,7 +95,7 @@
   auto identity = addIdentity(Name("/ndn/site1"));
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
-  RequestID requestId = {1,2,3,4,5,6,7,8};
+  RequestId requestId = {1,2,3,4,5,6,7,8};
   ca::RequestState request(Name("/ndn/site1"), requestId, RequestType::NEW, Status::BEFORE_CHALLENGE, cert, makeEmptyBlock(ndn::tlv::ContentType_Key));
 
   Block paramTLV = makeEmptyBlock(tlv::EncryptedPayload);
@@ -117,7 +117,7 @@
   auto cert = key.getDefaultCertificate();
   JsonSection json;
   json.put(ChallengeEmail::PARAMETER_KEY_CODE, "4567");
-  RequestID requestId = {1,2,3,4,5,6,7,8};
+  RequestId requestId = {1,2,3,4,5,6,7,8};
   ca::RequestState request(Name("/ndn/site1"), requestId, RequestType::NEW, Status::CHALLENGE, cert,
                   "email", ChallengeEmail::NEED_CODE, time::system_clock::now(),
                   3, time::seconds(3600), std::move(json), makeEmptyBlock(ndn::tlv::ContentType_Key), 0);
@@ -140,7 +140,7 @@
   auto cert = key.getDefaultCertificate();
   JsonSection json;
   json.put(ChallengeEmail::PARAMETER_KEY_CODE, "4567");
-  RequestID requestId = {1,2,3,4,5,6,7,8};
+  RequestId requestId = {1,2,3,4,5,6,7,8};
   ca::RequestState request(Name("/ndn/site1"), requestId, RequestType::NEW, Status::CHALLENGE, cert,
                   "email", ChallengeEmail::NEED_CODE, time::system_clock::now(),
                   3, time::seconds(3600), std::move(json), makeEmptyBlock(ndn::tlv::ContentType_Key), 0);