Unable to run test using `mvn clean test` on main application when Flyway is embedded in an external jar.

[dcdh]

Describe the bug
I have designed a POC to ensure that CDI, JPA, Flyway and Kafka integration defined in an external jar are working well.
Excepted Flyway all other libraries are working.

Expected behavior
The appliation should compile and produce a jar file.

Actual behavior
The application fails to compile.
This error arise when compiling it:

[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.355 s <<< FAILURE! - in com.damdamdeo.helloworld.HelloWorldServiceAppTest
[ERROR] should_say_hello  Time elapsed: 0.011 s  <<< ERROR!
org.junit.jupiter.api.extension.TestInstantiationException: 
TestInstanceFactory [io.quarkus.test.junit.QuarkusTestExtension] failed to instantiate test class [com.damdamdeo.helloworld.HelloWorldServiceAppTest]: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
        [error]: Build step io.quarkus.flyway.FlywayProcessor#build threw an exception: java.nio.file.FileSystemNotFoundException
Caused by: java.lang.RuntimeException: 
io.quarkus.builder.BuildException: Build failure: Build failed due to errors
        [error]: Build step io.quarkus.flyway.FlywayProcessor#build threw an exception: java.nio.file.FileSystemNotFoundException
Caused by: io.quarkus.builder.BuildException: 
Build failure: Build failed due to errors
        [error]: Build step io.quarkus.flyway.FlywayProcessor#build threw an exception: java.nio.file.FileSystemNotFoundException
Caused by: java.nio.file.FileSystemNotFoundException

To Reproduce
Steps to reproduce the behavior:

1. git clone https://github.com/dcdh/poc-quarkus-external-jar.git
2. cd helloworld-service
3. mvn clean install
4. cd ../helloworld-app
5. mvn clean install

Configuration

# Add your application.properties here, if applicable.

Screenshots

Environment (please complete the following information):

• Output of uname -a or ver: Linux arch-anywhere 5.1.6-arch1-1-ARCH Switch to the Maven distributed copy of the SubstrateVM annotations #1 SMP PREEMPT Fri May 31 15:17:53 UTC 2019 x86_64 GNU/Linux
• Output of java -version: openjdk version "1.8.0_222"
• GraalVM version (if different from Java): n.a.
• Quarkus version or git rev: 0.21.1

Additional context

[dcdh]

FlywayProcessor:

When test is running from Intellij the path is /home/damien/IdeaProjects/pocquarkusexternaljar/helloworld-service/target/classes/db/migration

When test is running using mvn -Dtest=HelloWorldServiceAppTest -Dmaven.surefire.debug test the path is file:/home/damien/.m2/repository/com/damdamdeo/helloworld-service/1.0-SNAPSHOT/helloworld-service-1.0-SNAPSHOT.jar!/db/migration and Paths.get(path.toURI()) throw a FileNotFoundException.

We need to avoid the use of Paths.get(path.toURI()) and find another way to fulfill both executions.