Switch sd_event loops to sdeventplus

This change is mostly focused around plumbing the sdeventplus::Event
object everywhere and using the member functions provided for the event.
No migration to the timer utility is performed yet.

Change-Id: I912ab82bc081239d3b7c3cf7c5caca6742ef9c87
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/control/actions.cpp b/control/actions.cpp
index b162602..71f7f72 100644
--- a/control/actions.cpp
+++ b/control/actions.cpp
@@ -43,7 +43,7 @@
                 // Create/start timer and associate event data with it
                 std::unique_ptr<util::Timer> timer =
                     std::make_unique<util::Timer>(
-                            zone.getEventPtr(),
+                            zone.getEventLoop(),
                             [&zone,
                             actions = &actions,
                             group = &group]()