Rename RequestState to CaState
 - to prevent confusion with RequesterState

Change-Id: I56048e289fded44bf39dd1fe6a5e26ddd3938b99
diff --git a/tests/unit-tests/ca-module.t.cpp b/tests/unit-tests/ca-module.t.cpp
index 66a929b..d18931f 100644
--- a/tests/unit-tests/ca-module.t.cpp
+++ b/tests/unit-tests/ca-module.t.cpp
@@ -457,7 +457,7 @@
   signatureInfo.setValidityPeriod(security::ValidityPeriod(time::system_clock::now(),
                                                            time::system_clock::now() + time::hours(10)));
   m_keyChain.sign(clientCert, signingByKey(clientKey.getName()).setSignatureInfo(signatureInfo));
-  RequestState certRequest(Name("/ndn"), "122", RequestType::NEW, Status::SUCCESS, clientCert, makeEmptyBlock(tlv::ContentType_Key));
+  CaState certRequest(Name("/ndn"), "122", RequestType::NEW, Status::SUCCESS, clientCert, makeEmptyBlock(tlv::ContentType_Key));
   auto issuedCert = ca.issueCertificate(certRequest);
 
   CaProfile item;