allow X509 subject DNs to be presented also in the legacy format?

[maarten-litmaath]

The X509 subject DN(s) of an account may need to be copy-pasted into other systems that expect the DN format to be what openssl uses e.g. on CentOS 7 and for which the arguments "-nameopt compat" are needed on newer OS versions. At least ALICE have such a use case. It would thus be great if the GUI presented the DNs also in the legacy format, if that is easy to implement.

Modern formats:

DC = ch, DC = cern, OU = Organic Units, OU = Users, CN = [...]
CN=[...],OU=Users,OU=Organic Units,DC=cern,DC=ch

Legacy format:

/DC=ch/DC=cern/OU=Organic Units/OU=Users/CN=[...]

[maarten-litmaath]

A conversion script is easily written (example attached), but still an annoying extra step.

dn-convert-sh.txt