title: Liquibase : link main yaml changelog from test
body: <p>I want to link yaml database creation rules from src/main/resources.. in src/test/resources and add one more chagngelog with sample data. </p>
  
  <p>src\test\resources\db\changelog\db.changelog-master.yaml : </p>
  
  <pre><code>databaseChangeLog:
  - include:
      file: ../../main/resources/db/changelog/db.changelog-master.yaml
  - include:
      file: db/changelog/marketplace/sampleData.yaml
  </code></pre>
  
  <p>But it doesn't work. So, the error is : Error parsing ../../main/resources/db/changelog/db.changelog-master.yaml</p>
  
  <p>Is there any other options to link main resources from main? 
  This is a spring boot project. </p>
  
  <p>Error stack trace : </p>
  
  <pre><code>Caused by: liquibase.exception.ChangeLogParseException: Error parsing classpath:/db/changelog/db.changelog-master.yaml
  at liquibase.parser.core.yaml.YamlChangeLogParser.parse(YamlChangeLogParser.java:84)
  at liquibase.Liquibase.getDatabaseChangeLog(Liquibase.java:217)
  at liquibase.Liquibase.update(Liquibase.java:190)
  at liquibase.Liquibase.update(Liquibase.java:179)
  at 
  </code></pre>
  
  <p>...</p>
  
  <pre><code>Caused by: java.io.FileNotFoundException: class path resource [../../main/resources/db/changelog/db.changelog-master.yaml] cannot be resolved to URL because it does not exist
  at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:195)
  at liquibase.integration.spring.SpringLiquibase$SpringResourceOpener.getResourcesAsStream(SpringLiquibase.java:504)
  at liquibase.util.StreamUtil.singleInputStream(StreamUtil.java:186)
  at liquibase.parser.core.yaml.YamlChangeLogParser.parse(YamlChangeLogParser.java:27)
  ... 52 more
  </code></pre>