add missing RHEL8 includes

Author: ondrej.ille

src/netlist/boolean_function.cpp

@@ -11,6 +11,7 @@
 #include <boost/spirit/home/x3.hpp>
 #include <chrono>
 #include <map>
+#include <iomanip>
 
 namespace hal
 {

src/utilities/utils.cpp

@@ -8,6 +8,7 @@
 #include <sstream>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <iomanip>
 
 #ifdef _WIN32
 #include <tchar.h>
@@ -720,4 +721,4 @@ permanent authorization for you to choose that version for the Library.
         }
 
     }    // namespace utils
-}    // namespace hal
+}    // namespace hal