Fix an issue with some jar files

🌴 Context

In !11 (merged), we implemented and merge support for maven packages.

To publish packages, we used the deploy-file command.

We hit an issue where the command can complain about missing information on the package to be published:

$ mvn deploy:deploy-file -Durl=https://gitlab.com/api/v4/projects/45821687/packages/maven -DrepositoryId=pkgs_importer_destination -Dfile=$(ls *.jar | head -n 1) -s settings.xml
[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO] 
[INFO] --- deploy:3.0.0:deploy-file (default-cli) @ standalone-pom ---
[INFO] pom.xml not found in spring-web-6.0.9.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.096 s
[INFO] Finished at: 2023-05-22T16:36:54+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:3.0.0:deploy-file (default-cli) on project standalone-pom: The artifact information is incomplete: 'groupId', 'artifactId', 'version' and 'packaging' are required. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

To fix, this we can add an additional parameter to the command, the pomFile location. This file is the metadata file about the package and will provide the information that the command needs.

Related issue: #26 (closed)

🤔 What does this MR do?

• Update the publish script for Maven packages to support the pomFile option
• Update the related test.

⚙ How to test this locally

With the following config.yml file:

config.yml

from_maven_central:
  type: maven
  source:
    url: https://repo1.maven.org/maven2
  destination: &maven_destination
    url: 	https://gitlab.com/api/v4/projects/<project_id>/packages/maven
    credentials:
      token: $GITLAB_TOKEN
      header_name: Private-Token
  packages:
    "org.springframework:spring-web": 6.0.9

1. Generate the pipeline config file: $ go run main.go generate -c <config file path>
2. Take the child_pipeline.yml file contents and paste into the <project_id> repository in a .gitlab-ci.yml file.
3. Check the pipeline.

Using main

The pomFile option is not used and the upload operation fails 💥

Using this MR branch

The pomFile option is used for the upload and it succeeds 🎉