src: add missing headers

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I6043ef792c2ce0a8e7584a73f83ca365ec61794d
diff --git a/src/CPUSensor.cpp b/src/CPUSensor.cpp
index 5aedf4b..9458896 100644
--- a/src/CPUSensor.cpp
+++ b/src/CPUSensor.cpp
@@ -24,10 +24,14 @@
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/date_time/posix_time/posix_time.hpp>
 #include <iostream>
+#include <istream>
 #include <limits>
+#include <memory>
 #include <sdbusplus/asio/connection.hpp>
 #include <sdbusplus/asio/object_server.hpp>
+#include <stdexcept>
 #include <string>
+#include <vector>
 
 CPUSensor::CPUSensor(const std::string& path, const std::string& objectType,
                      sdbusplus::asio::object_server& objectServer,