[ndnSIM] More intrusive changes removing use of boost::asio::io_service

Use of either removed or replaced with defunct DummyIoService for API
compatibility.

Change-Id: I9f99a944bf5cd082180e3f0ebccf977d5bf73f26
diff --git a/src/ims/in-memory-storage.hpp b/src/ims/in-memory-storage.hpp
index 9e61e7a..9850187 100644
--- a/src/ims/in-memory-storage.hpp
+++ b/src/ims/in-memory-storage.hpp
@@ -115,7 +115,7 @@
    *  The InMemoryStorage created through this method will handle MustBeFresh in interest processing
    */
   explicit
-  InMemoryStorage(boost::asio::io_service& ioService,
+  InMemoryStorage(DummyIoService& ioService,
                   size_t limit = std::numeric_limits<size_t>::max());
 
   /** @note Please make sure to implement it to free m_freeEntries and evict