Created promotion seed

[WitekL]

No description provided.

[bbonislawski]

Hardcoded ID

[safeforge]

@WitekL after this merge seems to be not possible to install spree (3.6.1) with seeds and without samples on rails (5.2.0)

$ rails g spree:install --migrate=true --sample=false --seed=true --copy_views=false

...
loading ruby ../spree_core-3.6.1/db/default/spree/countries.rb
loading ruby ../spree_core-3.6.1/db/default/spree/default_reimbursement_type.rb
loading ruby ../spree_core-3.6.1/db/default/spree/promotions.rb
Loaded Option Types samples
Loaded Option Values samples
Loaded Tax Categories samples
Loaded Shipping Categories samples
Loaded Products samples
loading ruby ../spree_core-3.6.1/db/default/spree/roles.rb
loading ruby ../spree_core-3.6.1/db/default/spree/states.rb
loading ruby ../spree_core-3.6.1/db/default/spree/stores.rb
loading ruby ../spree_core-3.6.1/db/default/spree/zones.rb
loading ruby ../spree_auth_devise-3.3.3/db/default/users.rb
...

my expectations was to have a database with seeds without products, but in the console:

irb(main):002:0> Spree::Product.count
   (1.0ms)  SELECT COUNT(*) FROM "spree_products" WHERE "spree_products"."deleted_at" IS NULL
=> 16

spree should works without promotions and I was wondering if it's a good idea to move core/db/default/spree/promotions.rb in sample/db/sample/promotions.rb

/cc @bbonislawski @damianlegawiec

[WitekL]

@safeforge Thanks for reporting this issue. I will attend to it right away