fix: Ensure Gem.paths are clear/reset after being adjusted during init

Author: chadlwilson

lib/warbler/templates/jar.erb

@@ -9,3 +9,5 @@ ENV['GEM_PATH'] = nil # RGs sets Gem.paths.path = Gem.default_path + [ GEM_HOME
 <% if config.bundler && config.bundler[:gemfile_path] -%>
 ENV['BUNDLE_GEMFILE'] = File.expand_path(File.join('..', '..', '<%= config.bundler[:gemfile_path] %>'), __FILE__)
 <% end -%>
+<%# Ensure any cached paths are cleared; otherwise behaviour can be indeterminate if the paths have already been read %>
+# Gem.clear_paths

lib/warbler/templates/war.erb

@@ -1,10 +1,5 @@
 if $servlet_context.nil?
   ENV['GEM_HOME'] <%= config.override_gem_home ? '=' : '||=' %> File.expand_path(File.join('..', '..', '<%= config.gem_path %>'), __FILE__)
-<% if config.override_gem_home -%>
-<% # GEM_HOME/GEM_PATH are set as .war gets extracted (on java -jar ...)
-   # ... thus setting `ENV['GEM_PATH'] = nil` would cause a boot failure
--%>
-<% end -%>
 <% if config.bundler && config.bundler[:gemfile_path] -%>
   ENV['BUNDLE_GEMFILE'] ||= File.expand_path(File.join('..', '..', '<%= config.bundler[:gemfile_path] %>'), __FILE__)
 <% end -%>
@@ -17,3 +12,5 @@ else
   ENV['BUNDLE_GEMFILE'] ||= $servlet_context.getRealPath('/<%= config.bundler[:gemfile_path] %>')
 <% end -%>
 end
+<%# Ensure any cached paths are cleared; otherwise behaviour can be indeterminate if the paths have already been read %>
+Gem.clear_paths