Support DICOM keys when pruning extra keys

[Nic-Ma]

Is your feature request related to a problem? Please describe.
Currently, seems we only prune the nifti keys:
https://github.com/Project-MONAI/MONAI/blob/dev/monai/data/utils.py#L1469
It may be necessary to support other keys and DICOM keys.
@yiheng-wang-nv reported the feedback when developing TCIA dataset.

[yiheng-wang-nv]

Thanks @Nic-Ma . As for dicom data, PydicomReader will save all tags with the to_json_dict method, and the keys are derived from original dicom tags. For example, "00200037", "7FE00008".

[wyli]

addressed by #4819 regex support