This is an 'easy' upgrade that requires a minor change in
common/build.gradle and the removal of an unnecessary import in buildSrc.
Gradle 7.4 and above has breaking changes that break the latest nebula lint plugin. We may have to wait a while.
* Convert to gradle 7.
* More fixes, regenerated lockfiles.
* Update lockfiles for dependency update.
* Fix show_upgrade_diff for new lockfile format
* Add property for allowInsecureProtocol
Allow us to override the restriction against use of plain HTTP for
communication to dependency repositories. We need this to be able to use a
local proxy for dependency gathering.
* Checking in missing gradle.lockfile
Weimin Yu
Michael Muller