Use a specific version of the xurls utility for the CI

[jodh-intel]

We should not use the latest version of the xurls utility, but should query the version to use from the runtime's versions database. The reason is that the latest xurls requires a golang 1.10.3, but the stable branches are using 1.10. This issue is failing the following stable branch PRs:

• create/run: Make bundle path default to cwd runtime#836
• create/run: Make bundle path default to cwd runtime#838

Oonce this PR lands, it will need to be backported to the stable branches to allow the branches above to land.

Related: kata-containers/runtime#855