Remove Guava dependency from project

[rohanKanojia]

Description

We should remove Guava dependency from project .

         Thanks for spotting this! An alternative solution would be to remove Guava altogether from the code base, it doesn't add many benefits (except causing issues like these :)

@rohanKanojia wdyt ? On the other hand, this is a quick fix without any side-effects asfais, so would be happy to merge it, too.

Originally posted by @rhuss in #1833 (comment)

[mdxabu]

@rohanKanojia, Can you assign this to me?

[rohanKanojia]

@mdxabu : Thanks, you can start by replacing Guava classes with inbuilt JDK replacements. I think for JIB functionality we do need guava dependency. Although we can remove the usage of Guava classes in our codebase.

[mdxabu]

@mdxabu : Thanks, you can start by replacing Guava classes with inbuilt JDK replacements. I think for JIB functionality we do need guava dependency. Although we can remove the usage of Guava classes in our codebase.

@rohanKanojia, Is all modules using guava?

[rohanKanojia]

We only have single module for docker-maven-plugin (in the src/ folder) . Rest of the modules are examples and integration tests. You only need to make changes in files in src/ directory.