Add getServerAddress and getServerPort implementations to VertxSqlClientAttributesGetter

SqlClientAttributesGetter extends ServerAttributesGetter which requires
getServerAddress and getServerPort implementations for capturing server
attributes at request time.

VertxSqlClientRequest already has getHost() and getPort() methods that
extract values from SqlConnectOptions, so we can implement these methods
to properly capture server.address and server.port attributes.

Author: trask

instrumentation/vertx/vertx-sql-client/vertx-sql-client-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/vertx/sql/VertxSqlClientAttributesGetter.java

@@ -41,6 +41,18 @@ public String getDbNamespace(VertxSqlClientRequest request) {
     return request.getDatabase();
   }
 
+  @Nullable
+  @Override
+  public String getServerAddress(VertxSqlClientRequest request) {
+    return request.getHost();
+  }
+
+  @Nullable
+  @Override
+  public Integer getServerPort(VertxSqlClientRequest request) {
+    return request.getPort();
+  }
+
   @Override
   public Collection<String> getRawQueryTexts(VertxSqlClientRequest request) {
     return singleton(request.getQueryText());