add Chef::Config[:chef_gem_compile_time] plus RELNOTES

* added a config flag to force chef_gem to behave like Chef-10/11
  or to behave like Chef-13.
* added a bunch of release notes to explain the warnings and what to
  do about them in quite a bit of detail.

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/chef/resource/chef_gem.rb b/lib/chef/resource/chef_gem.rb
index 126e3d56c3..c95bf03200 100644
--- a/lib/chef/resource/chef_gem.rb
+++ b/lib/chef/resource/chef_gem.rb
@@ -28,7 +28,7 @@ class Chef
       def initialize(name, run_context=nil)
         super
         @resource_name = :chef_gem
-        @compile_time = nil
+        @compile_time = Chef::Config[:chef_gem_compile_time]
         @gem_binary = RbConfig::CONFIG['bindir'] + "/gem"
       end
 
@@ -53,9 +53,9 @@ class Chef
         # Chef::Resource.run_action: Caveat: this skips Chef::Runner.run_action, where notifications are handled
         # Action could be an array of symbols, but probably won't (think install + enable for a package)
         if compile_time.nil?
-          Chef::Log.warn "The chef_gem installation at compile time is deprecated and this behavior will change in the future."
-          Chef::Log.warn "Please set `compile_time false` on the resource to use the new behavior and suppress this warning,"
-          Chef::Log.warn "or you may set `compile_time true` on the resource if compile_time behavior is necessary."
+          Chef::Log.warn "#{self} chef_gem compile_time installation is deprecated"
+          Chef::Log.warn "#{self} Please set `compile_time false` on the resource to use the new behavior."
+          Chef::Log.warn "#{self} or set `compile_time true` on the resource if compile_time behavior is required."
         end
 
         if compile_time || compile_time.nil?