Incorrect guava version in project created from archetype

[annabudziszewska]

After creating new project from AEM BDD Bobcat archetype, guava 15.0 was imported

Workaround: set new guava version in pom file:

<dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>21.0</version>
</dependency>

[mkrzyzanowski]

This is a part of a bigger cleanup of all project dependencies.

[mkrzyzanowski]

Should be resolved with #243