[BUG] The script new.sh generates a wrong package for test classes.

Created by: marcoaltieri

Description

The script new.sh creates test classes with a wrong package if the generator name contains dashes.

openapi-generator version

Since the new.sh was introduced.

Command line used for generation

./new.sh -n java-something -s -t

Steps to reproduce

Execute: ./new.sh -n java-something -s -t

The script generates the class: modules/openapi-generator/src/test/java/org/openapitools/codegen/java-something/JavaSomethingServerCodegenModelTest.java

that has an invalid character in its package.

Suggest a fix

Ideally, the script should generate the classes in the package

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/something

or, at least, it should state that, with the current implementation, a dash in the generator name is not supported by this script.