Add a couple more test cases to urltestdata.txt

[frewsxcv]

From servo/rust-url#108

[hoppipolla-critic-bot]

Critic review: https://critic.hoppipolla.co.uk/r/4963

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[frewsxcv]

Dont merge this yet, I actually have a couple more to add

[frewsxcv]

Okay, should be ready to go

[sideshowbarker]

For future reference, please don't squash/rebase on review branches (for one reason, because the external "critic" code-review system we use isn't smart enough to deal with it as expected)

[sideshowbarker]

@annevk might want to review this (post-commit) & see servo/rust-url#108 for the context

[annevk]

These two tests make sense to me.