Moves project build to ASF infrastructure (#17)

This moves off non-ASF things including repositories, deployment
processes, license headers etc. It creates the same changes done
in brave-karaf. Later, we'll need to setup Jenkins to look at this
and also do a test release.

.gitignore

@@ -19,3 +19,11 @@ target/
 
 # macOS
 .DS_Store
+
+# Eclipse
+.classpath
+.project
+.settings/
+
+# Maven Wrapper
+.mvn/wrapper/maven-wrapper.jar

.mvn/wrapper/MavenWrapperDownloader.java

@@ -1,34 +1,31 @@
 /*
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-  http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
-*/
-
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 import java.net.*;
 import java.io.*;
 import java.nio.channels.*;
 import java.util.Properties;
 
 public class MavenWrapperDownloader {
 
+    private static final String WRAPPER_VERSION = "0.5.3";
     /**
      * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
      */
-    private static final String DEFAULT_DOWNLOAD_URL =
-            "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar";
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + " .jar";
 
     /**
      * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
@@ -76,13 +73,13 @@ public static void main(String args[]) {
                 }
             }
         }
-        System.out.println("- Downloading from: : " + url);
+        System.out.println("- Downloading from: " + url);
 
         File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
         if(!outputFile.getParentFile().exists()) {
             if(!outputFile.getParentFile().mkdirs()) {
                 System.out.println(
-                        "- ERROR creating output direcrory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
             }
         }
         System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
@@ -98,6 +95,16 @@ public static void main(String args[]) {
     }
 
     private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
         URL website = new URL(urlString);
         ReadableByteChannel rbc;
         rbc = Channels.newChannel(website.openStream());

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1,2 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.0/apache-maven-3.6.0-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.3/maven-wrapper-0.5.3.jar

DISCLAIMER

@@ -0,0 +1,5 @@
+Apache Zipkin (incubating) is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator PMC.
+Incubation is required of all newly accepted projects until a further review indicates 
+that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. 
+While incubation status is not necessarily a reflection of the completeness or stability of the code, 
+it does indicate that the project has yet to be fully endorsed by the ASF.