Move to more consistent ownership of ECL data in EclBaseVanguard

We resort to consistently use unique_ptrs in EclBaseVanguard for
the data read from ECL files or set externally. This means that
during the simulation EclBaseVanguard owns this data and not Main
or the ebos setup functions. This ownership transfer becomes
transparent due to std::move.

This came up when trying to fix the parallel runs of ebos and during
that removing some code duplication.

flow/flow_ebos_polymer.hpp

@@ -23,7 +23,10 @@
 #include <opm/parser/eclipse/EclipseState/SummaryConfig/SummaryConfig.hpp>
 
 namespace Opm {
-void flowEbosPolymerSetDeck(double setupTime, Deck *deck, EclipseState& eclState, Schedule& schedule, SummaryConfig& summaryConfig);
+void flowEbosPolymerSetDeck(double setupTime, std::unique_ptr<Deck> deck,
+                            std::unique_ptr<EclipseState> eclState,
+                            std::unique_ptr<Schedule> schedule,
+                            std::unique_ptr<SummaryConfig> summaryConfig);
 int flowEbosPolymerMain(int argc, char** argv, bool outputCout, bool outputFiles);
 }