Replace deprecated CPEs for Microsoft IIS. #2401

[oh2fih]

Replaces all cpe:/a:microsoft:internet_information_server with cpe:/a:microsoft:internet_information_services in Nmap service probes.

Closes #2401

[nnposter]

@dmiller-nmap I have noticed that this PR was merged directly, instead of imported into SVN. The SVN, currently at r38312, does not have the corresponding change. Does it mean that the GitHub repo is now the master?

[oh2fih]

I was wondering the same. According to CONTRIBUTING.md, GitHub should be used for pull requests. The changes are manually added to the Subversion repository and synced back from there. However, the document also states that the GitHub repository should be read only.

In my opinion the documented workflow seems a bit laborious, and it also hides all the people contributing to the project, so I hope this is not just a mistake, but a new beginning.

[dmiller-nmap]

Unfortunately, I just made a mistake in doing it this way. We're still not set up to make commits directly to Github. I'll have to clobber this one in order to allow SVN to sync again, then make a separate commit to SVN with a credit in the CHANGELOG for @oh2fih.