[DS-3804] Jar dependency issues running DSpace 7x REST

[terrywbrady]

This PR is a temporary fix to restore stability to the REST build process.

• https://jira.duraspace.org/browse/DS-3804
• https://jira.duraspace.org/browse/DS-3805

Recommended approach

The more comprehensive approach to the problem will be to upgrade the version of log4j that is in use. DSpace currently uses a version that is at end of life.

• https://jira.duraspace.org/browse/DS-3135
• https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-log4j-for-logging

[tdonohue]

Looks good overall. One minor request to add in a comment about the temporary dependency exclusions. But, after that, I think this is good to merge

[tdonohue]

Could we add a simple comment here that says something like:

<!-- Temporary exclusions until DS-3135 is fixed. Once we are using log4j v2, we should update Spring Boot to utilize it per these instructions: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-log4j-for-logging -->

[abollini]

if the jackson exclusion is not required to have the OAI running properly I will prefer to skip it

[abollini]

I'm a bit worried about this exclusion as it is an artifact from an old, different layout, jackson version. The mapper class are now in the jackson-databinder artifact so if we really use this staff we could hit a classnotfound exception at runtime somewhere... BTW the jtwig-spring version in our depency is quite old the new one is: http://jtwig.org/