(CAT-2247) Remove support for Puppet 7 and Ruby 2.7

- Set ruby version for Puppet 8 from 3.2.0 to 3.1.0

Author: david22swan

configs/components/_template_helper.rb

@@ -31,7 +31,7 @@ def build_module(settings, pdk_bin, cachedir, privatedir, template_ref, is_windo
 
   # Copy generated Gemfile.lock into cachedir.
   build_commands << "cp #{mod_name}/Gemfile.lock #{cachedir}/Gemfile-#{settings[:ruby_version]}.lock"
-  build_commands << "cp #{mod_name}/Gemfile.lock #{cachedir}/Gemfile.lock" if settings[:rub_api] == '3.2.0'
+  build_commands << "cp #{mod_name}/Gemfile.lock #{cachedir}/Gemfile.lock" if settings[:rub_api] == '3.1.0'
 
   # Run 'bundle install' in the generated module to cache the gems
   # inside the project cachedir.

configs/components/gem-prune.rb

@@ -17,7 +17,7 @@
       gem_bins[local_settings[:ruby_api]] = local_settings[:host_gem]
     end
 
-    pdk_ruby_versions = ['2.7.0', '3.2.0']
+    pdk_ruby_versions = ['3.1.0']
 
     pdk_ruby_versions.map do |rubyapi|
       gem_paths = [

configs/components/puppet-versions.rb

@@ -34,8 +34,7 @@ def latest_puppet_gem(req)
   def ruby_for_puppet(version)
     # TODO: calculate this based on settings
     ruby_mappings = {
-      '2.7.0' => Gem::Requirement.create(['~> 7.0']),
-      '3.2.0' => Gem::Requirement.create(['~> 8.0'])
+      '3.1.0' => Gem::Requirement.create(['~> 8.0'])
     }
 
     ruby_mappings.each do |rubyver, pup_range|