remove enforcement of Map to Map<String, Object>

[jarunj]

No description provided.

[roimenashe]

@jarunj Thanks for opening this PR.
There is a plan to support other types other than String as a Map key and also as an entire Aerospike Record key in the next releases of Spring Data Aerospike.
We are looking into this, there might be some weird behavior and potentially breaking changes following this change.
I'll update this ticket once we will know more.

[agrgr]

@jarunj, within version 4.6.0 we added the ability to read primitive non-String map keys (request).
Can you please give a use case example - what is writing non-String map keys is required for?

[roimenashe]

@jarunj Supporting Aerospike native types for Record Key and Map Key is handled in: #660 and will be part of the next version release. Thanks for bringing this to our attention and sorry it took a while.