Issue nr: 14594 - removing old implementation where fields where dot-…

[rajmondburgaj]

…escaped due to old ELK not supporting it. But now this is supported, therefore there is no need to escape it anylonger.

What issue does this PR address?

Disable dot escaping for field names, as it is supported since long time ago in ELK.

Does this PR introduce a breaking change?

If the field name x.y was used, till now in kibana it would show as x/y, after this commit, it will show as x.y. But I think the breaking change is very small.

Please check if the PR fulfills these requirements

• The commit follows our guidelines
• Unit Tests for the changes have been added (for bug fixes / features)

There was no need for new unit tests, since only old code was removed.

Other information:

Also changed a method from using recursion to a simple while loop.

[mivano]

Thanks for the PR and sorry for not responding sooner!