ZOOKEEPER-3874: Official API to start ZooKeeper server from Java

Create an Official API to start a ZooKeeper server node from Java code.
The idea is not to run ZooKeeper server inside the same process of an application, but only to have a standard Launcher that can be used from Java and not a bash script.

See more context here
https://issues.apache.org/jira/browse/ZOOKEEPER-3874

This is how a Java launcher will look like for tests:
```
        int clientPort = PortAssignment.unique();
        final Properties configZookeeper = new Properties();
        configZookeeper.put("clientPort", clientPort + "");
        configZookeeper.put("host", "localhost");
        configZookeeper.put("..........................");
        try (ZooKeeperServerEmbedded zkServer = ZooKeeperServerEmbedded
                .builder()
                .baseDir(baseDir)
                .configuration(configZookeeper)
                .exitHandler(ExitHandler.LOG_ONLY)
                .build()) {
            zkServer.start();
            //// wait.....
      }
```

This feature does not overlap with Curator TestingServer, this feature is meant to be used a fundation for projects like TestingServer but also to run ZooKeeper server nodes in production.

This code is running in production at https://www.mag-news.com and https://emailsuccess.com, in such products we are using a Java based process manager

Author: Enrico Olivelli <eolivelli@apache.org>
Author: Enrico Olivelli <eolivelli@gmail.com>

Reviewers: Damien Diederen <ddiederen@apache.org>

Closes #1526 from eolivelli/fix/ZOOKEEPER-3874-embedded-api

1 files changed, 6 insertions, 0 deletions

diff --git a/pom.xml b/pom.xml
index a030550fa..162e7da70 100755
--- a/pom.xml
+++ b/pom.xml
@@ -425,6 +425,7 @@
     <surefire.version>2.22.1</surefire.version>
 
     <surefire-forkcount>8</surefire-forkcount>
+    <redirectTestOutputToFile>true</redirectTestOutputToFile>
 
     <!-- dependency versions -->
     <slf4j.version>1.7.30</slf4j.version>
@@ -702,6 +703,10 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
+          <configuration>
+              <trimStackTrace>false</trimStackTrace>
+              <redirectTestOutputToFile>${redirectTestOutputToFile}</redirectTestOutputToFile>
+          </configuration>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -961,6 +966,7 @@
             <exclude>src/main/resources/markdown/skin/*</exclude>
             <exclude>src/main/resources/markdown/html/*</exclude>
             <exclude>src/main/resources/markdown/images/*</exclude>
+            <exclude>**/src/test/resources/embedded/*.conf</exclude>
             <!-- contrib -->
             <exclude>**/JMX-RESOURCES</exclude>
             <exclude>**/src/main/resources/mainClasses</exclude>