Rename test classes and tests in http-minimum* modules

http/http-minimum-reactive/src/test/java/io/quarkus/ts/http/minimum/reactive/HttpCustomHeadersIT.java → http/http-minimum-reactive/src/test/java/io/quarkus/ts/http/minimum/reactive/HttpCustomHeadersReactiveIT.java

@@ -13,7 +13,7 @@
 import io.quarkus.test.scenarios.QuarkusScenario;
 
 @QuarkusScenario
-public class HttpCustomHeadersIT {
+public class HttpCustomHeadersReactiveIT {
 
     @Tag("QUARKUS-1574")
     @Test