Rename clair feature to sast_image

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

ee/app/models/license.rb

@@ -55,8 +55,8 @@ class License < ActiveRecord::Base
 
   EEU_FEATURES = EEP_FEATURES + %i[
     sast
+    sast_image
     epics
-    clair
   ].freeze
 
   # List all features available for early adopters,

ee/app/serializers/ee/merge_request_entity.rb

@@ -78,7 +78,7 @@ module EE
     end
 
     def expose_clair_data?(mr, current_user)
-      mr.project.feature_available?(:clair) &&
+      mr.project.feature_available?(:sast_image) &&
         mr.has_clair_data? &&
         can?(current_user, :read_build, mr.clair_artifact)
     end