We are still too close to the limit of 1 hour (at least with the 2019
image and the 2022 image is about the same), so reduce the build time by
not building libimcv natively, which saves about 10 minutes.
Also, only build against OpenSSL 1.0.2 (on the 2017 image) and 1.1.1 (on
the 2019 image) as these are the only versions for which OpenSSL provides
extended support.