Fixes for Snooty build

[ccho-mongodb]

Fixes to allow for snooty builds.

Similar changes to be applied to v2.16 and v2.17 branches.

[schmalliso]

You're also going to need to add the submodule in 😁. https://github.com/mongodb/docs-ruby/pull/21/files has a good example of what I did for master; you'll need to do the same but with the relevant branch here.

[ccho-mongodb]

Thanks, added the .gitmodules for the appropriate branch.
@schmalliso could you take another look when you get the chance? Thanks!

[schmalliso]

Sorry for the confusion -- the submodule needs to be added using git submodule add rather than by editing the .gitmodules directly. Once you add those and commit the resulting files, we should be good to go.

[schmalliso]

Looks good - I've staged and everything seems to be hunky dory.
Preview: https://docs-mongodbcom-staging.corp.mongodb.com/ruby-driver/docsworker-xlarge/moduiletest/
Log: https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=64c7cc0487b3b3604698b107

[schmalliso]

LGTM % that odd indentation in the submodule which is mysterious.

[schmalliso]

the indentation went weird here, but it still seems to work…

[ccho-mongodb]

I think git seems to have two different behaviors for indenting when using "git submodule add -b" vs "git checkout" in the submodule directory. I fixed the indentation so that it matches for all lines.