Do not install the postgresql devel package by default
For compatibility with RedHat 8
Because you need to first execute the command "subscription-manager repos --enable codeready-builder-for-rhel-8-x86_64-rpms" to install the necessary dependencies, which is only available with an active subscription on RedHat.
Do not install the glibc-langpack-ru by default
Do not install extra repositories if the devel package is not defined in postgresql_packages
issue: https://github.com/vitabaks/postgresql_cluster/issues/298
subscription-manager repos --enable codeready-builder-for-rhel-8-x86_64-rpms" to install the necessary dependencies, which is only available with an active subscription on RedHat.postgresql_packages