preserve CamelCase

[JesseAldridge]

I used storm to parse my ssh config file for this tool: https://github.com/JesseAldridge/ssh_fixer
Unfortunately, it seems the CamelCase is lost and the output looks a bit ugly.

Before:

Host repo_quality
    HostName 54.172.109.248
    User ubuntu
    IdentityFile ~/.ssh/id_rsa2
    Cipher blowfish

After:

Host repo_quality
    identityfile ~/.ssh/id_rsa2
    hostname 54.172.109.248
    user ubuntu
    cipher blowfish

This PR preserves the original casing.

[emre]

Can you squash two commits into one commit? Looks legit.

Thanks for the contribution.

[JesseAldridge]

Done.

[StephenBrown2]

Should these (StrictHostKeyChecking and UserKnownHostsFile) not also assert CamelCase?

[JesseAldridge]

Hmm, maybe so. Those look to be coming from --o "StrictHostKeyChecking=yes" above... which I guess means something like "Add this key val pair".

But really the only part of this project I actually care about is this one file: storm/parsers/ssh_config_parser.py. Maybe I should just break that file out into a separate micro-repo and close this PR.

[StephenBrown2]

Yeah, I wonder why dump() isn't respecting the camelcase of the --o option. Need to dig into it further, even though it looks like you've got the lower_to_original function implemented there.