Testing a release

Test a Accumulo release

Set the release version, ID for staging repo, and alias to configure Maven with temporary settings:
```
export RC_VERSION=1.10.0
export RC_STAGING=1070
```

Create temporary Maven settings

$ cat <<EOF >/tmp/accumulo-rc-maven.xml
<settings>
  <profiles>
    <profile>
      <id>accumuloRC</id>
      <repositories>
        <repository>
          <id>accumulorc</id>
          <name>accumulorc</name>
          <url>https://repository.apache.org/content/repositories/orgapacheaccumulo-\${env.RC_STAGING}/</url>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>accumulorcp</id>
          <name>accumulorcp</name>
          <url>https://repository.apache.org/content/repositories/orgapacheaccumulo-\${env.RC_STAGING}/</url>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>accumuloRC</activeProfile>
  </activeProfiles>
</settings>
EOF

Run the integration tests of projects that use Accumulo

Clone the Accumulo Examples project:

 $ git clone https://github.com/apache/accumulo-examples.git

Run the integration test
```
 $ mvn -s /tmp/accumulo-rc-maven.xml clean verify -Daccumulo.version=$RC_VERSION
```
Below are more projects with integration tests:
- Wikisearch - https://github.com/apache/accumulo-wikisearch
- Apache Fluo - https://github.com/apache/fluo