Fix includes

Clang-tidy misc-include-cleaner appears to now be enforcing
significantly more headers than previously.  That is overall a good
thing, but forces us to fix some issues.  This commit is largely just
taking the clang-recommended fixes and checking them in.  Subsequent
patches will fix the more unique issues.

Note, that a number of new ignores are added into the .clang-tidy file.
These can be cleaned up over time as they're understood.  The majority
are places where boost includes a impl/x.hpp and x.hpp, but expects you
to use the later.  include-cleaner opts for the impl, but it isn't clear
why.

Change-Id: Id3fdd7ee6df6c33b2fd35626898523048dd51bfb
Signed-off-by: Ed Tanous <etanous@nvidia.com>
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/redfish-core/include/subscription.hpp b/redfish-core/include/subscription.hpp
index e7f1715..9c48dbb 100644
--- a/redfish-core/include/subscription.hpp
+++ b/redfish-core/include/subscription.hpp
@@ -17,14 +17,21 @@
 #include "event_logs_object_type.hpp"
 #include "event_service_store.hpp"
 #include "filter_expr_parser_ast.hpp"
+#include "http_client.hpp"
+#include "http_response.hpp"
 #include "metric_report.hpp"
 #include "server_sent_event.hpp"
 
 #include <boost/asio/io_context.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/url/url_view_base.hpp>
 
+#include <cstdint>
+#include <functional>
 #include <memory>
+#include <optional>
 #include <string>
+#include <vector>
 
 namespace redfish
 {