Fixes includes wrt opm-parser PR-656

Several files stopped compiling due to relying on opm-parser headers doing
includes. From opm-parser PR-656 https://github.com/OPM/opm-parser/pull/656
this assumption is no longer valid.

opm/autodiff/SimulatorBase_impl.hpp

@@ -21,6 +21,8 @@
 
 #include <algorithm>
 
+#include <opm/parser/eclipse/EclipseState/Schedule/Events.hpp>
+
 namespace Opm
 {