Credentials not retained in config

[RutgerBeyen]

The credentials specified under Source Code Management -> Git -> Additional Behaviours -> AWS CodeCommit URL Helper are not retained. When I input the credentials and save the build configuration, exit the page and re-enter the build configuration, no credentials are listed in the build configuration.
However, having a look at the raw build configuration file on the filesystem, the credential is referenced as it should be:
<submoduleCfg class="list"/> <extensions> <br.com.ingenieux.jenkins.plugins.codecommit.CodeCommitURLHelper plugin="codecommit-url-helper@0.0.3"> <credentialId>e************</credentialId> </br.com.ingenieux.jenkins.plugins.codecommit.CodeCommitURLHelper> </extensions>

If you happen to make any other change in the build configuration and save the page again, credential is lost:
<credentialId></credentialId>
and the build fails.

Same as #3 (comment)

[blockjon]

Confirmed this is still broken.

[LEDfan]

@RutgerBeyen @blockjon I created a PR at that fixes this issue see #6

[matt2005]

Fixed in #6