Add knife-rehash command for subcommand location hashing

`knife rehash` stores the paths to knife plugins in a specially
formatted plugin_manifest entry.  This lowers the overhead of
subsequent knife invocations.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/chef/knife/null.rb b/lib/chef/knife/null.rb
new file mode 100644
index 0000000000..c8f04e5cd3
--- /dev/null
+++ b/lib/chef/knife/null.rb
@@ -0,0 +1,8 @@
+class Chef
+  class Knife
+    class Null < Chef::Knife
+      def run
+      end
+    end
+  end
+end