Repository: quarkusio/quarkus
Issue: Error message on start (/etc/hosts permissions)

**Describe the bug**
At start of stock quarkus without any extensions I get the following message:

2019-11-21 07:25:46,065 WARN  [io.net.res.HostsFileParser] (main) Failed to load and parse hosts file at /etc/hosts: java.io.FileNotFoundException: /etc/hosts (Permission denied)

The application is still working

**Expected behavior**

No superfluous error message.

**Actual behavior**

WARN  [io.net.res.HostsFileParser] (main) Failed to load and parse hosts file at /etc/hosts: java.io.FileNotFoundException: /etc/hosts (Permission denied)
	at java.io.FileInputStream.open0(Native Method)
	at java.io.FileInputStream.open(FileInputStream.java:195)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at io.netty.resolver.HostsFileParser.parse(HostsFileParser.java:132)
	at io.netty.resolver.HostsFileParser.parseSilently(HostsFileParser.java:89)
	at io.netty.resolver.HostsFileParser.parseSilently(HostsFileParser.java:76)
	at io.vertx.core.impl.resolver.DnsResolverProvider.<init>(DnsResolverProvider.java:123)
	at io.vertx.core.spi.resolver.ResolverProvider.factory(ResolverProvider.java:39)
	at io.vertx.core.impl.AddressResolver.<init>(AddressResolver.java:75)
	at io.vertx.core.impl.VertxImpl.<init>(VertxImpl.java:167)
	at io.vertx.core.impl.VertxImpl.vertx(VertxImpl.java:92)
	at io.vertx.core.impl.VertxFactoryImpl.vertx(VertxFactoryImpl.java:40)
	at io.vertx.core.impl.VertxFactoryImpl.vertx(VertxFactoryImpl.java:32)
	at io.vertx.core.Vertx.vertx(Vertx.java:85)



**To Reproduce**
Steps to reproduce the behavior:
1. mvn io.quarkus:quarkus-maven-plugin:1.0.0.CR2:create  (the same behaviour on CR1)
2.  mvn compile quarkus:dev


**Configuration**
```properties
# Add your application.properties here, if applicable.

```

**Screenshots**
(If applicable, add screenshots to help explain your problem.)

**Environment (please complete the following information):**
 - Output of `uname -a` or `ver`: Darwin 19.0.0 Darwin Kernel Version 19.0.0, Mac OS Catalina
 - Output of `java -version`: 
java version "1.8.0_201"
Java(TM) SE Runtime Environment (build 1.8.0_201-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.201-b09, mixed mode)

 - GraalVM version (if different from Java): 
 - Quarkus version or git rev: CR2

**Additional context**

`sudo chmod a+r /etc/hosts`fixes the problem


Changed files:
extensions/vertx-core/deployment/src/main/java/io/quarkus/vertx/core/deployment/VertxCoreProcessor.java

diff --git a/extensions/vertx-core/deployment/src/main/java/io/quarkus/vertx/core/deployment/VertxCoreProcessor.java b/extensions/vertx-core/deployment/src/main/java/io/quarkus/vertx/core/deployment/VertxCoreProcessor.java
index 6de2d0c8819..65a5e2ef78c 100644
--- a/extensions/vertx-core/deployment/src/main/java/io/quarkus/vertx/core/deployment/VertxCoreProcessor.java
+++ b/extensions/vertx-core/deployment/src/main/java/io/quarkus/vertx/core/deployment/VertxCoreProcessor.java
@@ -13,6 +13,7 @@
 import io.quarkus.deployment.builditem.ShutdownContextBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.NativeImageConfigBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.ReflectiveClassBuildItem;
+import io.quarkus.deployment.logging.LogCleanupFilterBuildItem;
 import io.quarkus.netty.deployment.EventLoopSupplierBuildItem;
 import io.quarkus.runtime.RuntimeValue;
 import io.quarkus.vertx.core.runtime.VertxCoreProducer;
@@ -79,4 +80,9 @@ InternalWebVertxBuildItem buildWeb(VertxCoreRecorder recorder, VertxConfiguratio
         RuntimeValue<Vertx> vertx = recorder.initializeWeb(config, context, launchModeBuildItem.getLaunchMode());
         return new InternalWebVertxBuildItem(vertx);
     }
+
+    @BuildStep
+    LogCleanupFilterBuildItem filterNettyHostsFileParsingWarn() {
+        return new LogCleanupFilterBuildItem("io.netty.resolver.HostsFileParser", "Failed to load and parse hosts file");
+    }
 }