Add FIPS support

What does this MR do?

Build Pages with FIPS mode.

Once this MR merges, we will modify the make target in the docker image for FIPS Pages.

Related: Pages FIPS CNG Docker Image (#716 - closed)

Blocks: Add docker images for gitlab-go-fips and gitlab... (gitlab-org/build/CNG!942 - closed)

Reference: Add RHEL/UBI amd64 FIPS support (gitlab-runner!3255 - merged)

TODO

• I added the Changelog trailer (e.g. Changelog: added) to the commits that need to be included in the changelog
• I added unit tests or they are not required
• I added acceptance tests or they are not required
• I added documentation (or it's not required)
• I followed code review guidelines
• I followed Go Style guidelines