Update release scripts to handle 1.x and 0.x versions living together (#1922)

* Update release scripts to handle 1.x and 0.x versions living together #1845

Move and rename testing folder modules so they are consistent with current project naming and structure (so their versions can be updated by same script).

Author: vam-google

java-storage-nio/google-cloud-nio-examples/pom.xml

@@ -2,6 +2,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>google-cloud-nio-examples</artifactId>
+  <version>0.13.1-alpha-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>Google Cloud NIO Examples</name>
   <url>https://github.com/GoogleCloudPlatform/google-cloud-java/tree/master/google-cloud-contrib/google-cloud-nio-examples</url>

java-storage-nio/google-cloud-nio/pom.xml

@@ -2,6 +2,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>google-cloud-nio</artifactId>
+  <version>0.13.1-alpha-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>Google Cloud NIO</name>
   <url>https://github.com/GoogleCloudPlatform/google-cloud-java/tree/master/google-cloud-contrib/google-cloud-nio</url>