Don't rely on operator << for object logging

In the upcoming fmt patch, we remove the use of streams, and a number of
our logging statements are relying on them.  This commit changes them to
no longer rely on operator>> or operator+ to build their strings.  This
alone isn't very useful, but in the context of the next patch makes the
automation able to do a complete conversion of all log statements
automatically.

Tested: enabled logging on local and saw log statements print to console

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I0e5dc2cf015c6924037e38d547535eda8175a6a1
diff --git a/include/async_resolve.hpp b/include/async_resolve.hpp
index 0945001..7387f4d 100644
--- a/include/async_resolve.hpp
+++ b/include/async_resolve.hpp
@@ -89,7 +89,8 @@
                         return;
                     }
                     endpoint.port(portNum);
-                    BMCWEB_LOG_DEBUG << "resolved endpoint is : " << endpoint;
+                    BMCWEB_LOG_DEBUG << "resolved endpoint is : "
+                                     << endpoint.address().to_string();
                     endpointList.push_back(endpoint);
                 }
                 // All the resolved data is filled in the endpointList