Move SAST path to CE

As SAST scanner became a free one,
we need to move it's configuration path to
CE section of the codebase.

config/routes/project.rb

@@ -38,7 +38,9 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
         end
 
         namespace :security do
-          resource :configuration, only: [:show], controller: :configuration
+          resource :configuration, only: [:show], controller: :configuration do
+            resource :sast, only: [:show], controller: :sast_configuration
+          end
         end
 
         resources :artifacts, only: [:index, :destroy]

ee/config/routes/project.rb

@@ -64,7 +64,6 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           resource :configuration, only: [], controller: :configuration do
             post :auto_fix, on: :collection
             resource :corpus_management, only: [:show], controller: :corpus_management
-            resource :sast, only: [:show], controller: :sast_configuration
             resource :api_fuzzing, only: :show, controller: :api_fuzzing_configuration
             resource :dast_scans, only: [:show], controller: :dast_profiles do
               resources :dast_site_profiles, only: [:new, :edit]