Unknown configuration property: flyway.skip when property set to false or null

[pdudits]

What version of Flyway are you using?

5.0.2

Which client are you using? (Command-line, Java API, Maven plugin, Gradle plugin, SBT plugin, ANT tasks)

Maven

What database are you using (type & version)?

Irrelevant

What operating system are you using?

Windows

What did you do?

(Please include the content causing the issue, any relevant configuration settings, and the command you ran)

<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>
    <groupId>org.flywaydb-bug</groupId>
    <artifactId>flyway-skip</artifactId>
    <version>5.0.2</version>
    <packaging>jar</packaging>
    <properties>
        <flyway.skip></flyway.skip><!-- or false -->
    </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.flywaydb</groupId>
                <artifactId>flyway-maven-plugin</artifactId>
                <version>5.0.2</version>
                <executions>
                    <execution>
                        <id>test</id>
                        <goals>
                            <goal>migrate</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

What did you expect to see?

Flyway should execute the migration

What did you see instead?

Failed to execute goal org.flywaydb:flyway-maven-plugin:5.0.2:migrate (test) on project flyway-skip: 
org.flywaydb.core.api.FlywayException: Unknown configuration property: flyway.skip