Add missing versions from upgrade test versions
Add missing versions from upgrade test versions

This commit adds two missing version constants from the upgrade test
versions. This list of versions is used to randomly select a version to
upgrade from, and the list of constants must be kept up to date with the
list of released versions.

strapdata/elassandra5-rc,strapdata/elassandra5-rc,strapdata/elassandra5-rc,strapdata/elassandra5-rc,strapdata/elassandra5-rc