security: Rename security/v2/* to security/*

Security v1-v2 transition has been completed for a while and path
separation is no longer needed. However, this commit preserves
`ndn::security::v2` namespace, but makes it inline.

Some commonly used v2 headers are preserved, but are deprecated and
should be avoided in the dependent software.

Change-Id: I26056cb3d34bcdc0a16e06dea8c1a78c03da2d40
diff --git a/tests/unit/security/validator-config/common.hpp b/tests/unit/security/validator-config/common.hpp
new file mode 100644
index 0000000..de72e3f
--- /dev/null
+++ b/tests/unit/security/validator-config/common.hpp
@@ -0,0 +1,50 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2020 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_TESTS_SECURITY_V2_VALIDATOR_CONFIG_COMMON_HPP
+#define NDN_TESTS_SECURITY_V2_VALIDATOR_CONFIG_COMMON_HPP
+
+#include "ndn-cxx/security/validator-config/common.hpp"
+
+#include <boost/property_tree/info_parser.hpp>
+
+namespace ndn {
+namespace security {
+inline namespace v2 {
+namespace validator_config {
+namespace tests {
+
+inline ConfigSection
+makeSection(const std::string& config)
+{
+  std::istringstream inputStream(config);
+  ConfigSection section;
+  boost::property_tree::read_info(inputStream, section);
+  return section;
+}
+
+} // namespace tests
+} // namespace validator_config
+} // inline namespace v2
+} // namespace security
+} // namespace ndn
+
+#endif // NDN_TESTS_SECURITY_V2_VALIDATOR_CONFIG_COMMON_HPP