Geode replicated region example

This is a simple example that demonstrates putting values into a replicated region, checking the size, and retrieving the values.

This example assumes you have installed Java and Geode.

Steps

From the geode-examples/replicated directory, build the example and run unit tests
```
 $ ../gradlew build
```
Next start the locator and two servers
```
 $ gfsh run --file=scripts/start.gfsh
```
Run the example to create entries in the region
```
 $ ../gradlew run
```

Kill one of the servers

 $ gfsh -e "connect --locator=127.0.0.1[10334]" -e "stop server --name=server1"

Run a gfsh query, and notice that all the entries are still available due to replication

 $ gfsh -e "connect --locator=127.0.0.1[10334]" -e "query --query='select e.key from /example-region.entries e'"