Switch to just using --directory more than once

I wasn't aware that this was our standard way of doing this. Works for me.

Signed-off-by: Tim Smith <[email protected]>

RELEASE_NOTES.md

@@ -1,3 +1,14 @@
+# UNRELEASED
+
+## Multiple plugin directories
+
+You can now specify more than one directory to load additional Ohai plugins from by using the `--directory` / `-d` flag more than once.
+
+Example:
+```bash
+ohai -d /path/to/more/plugins -d /another/path/to/more/plugins
+```
+
 # Ohai Release Notes 14.3
 
 ## Detection of Amazon Linux 2.0

lib/ohai/application.rb

@@ -34,12 +34,10 @@ class Ohai::Application
  option :directory,
  short: "-d DIRECTORY",
  long: "--directory DIRECTORY",
- description: "A directory to add to the Ohai plugin search path. If passing multiple directories comma separate directories.",
- proc: lambda { |paths|
- paths = paths.split(",")
- paths.map do |path|
- Ohai::Config.platform_specific_path(path)
- end
+ description: "A directory to add to the Ohai plugin search path. If passing multiple directories use this option more than once.",
+ proc: lambda { |path, path_array|
+ (path_array ||= []) << Ohai::Config.platform_specific_path(path)
+ path_array
  }
 
  option :log_level,