Add old products from tryton contracts

• Commit 1: Add discontinued products.

  We need discontinued products to migrate existing tryton contracts to odoo.

  • Add old products to DB
  • Add new boolean field in product to check whether they are discontinued or not (False by default).

SE_SC_REC_MOBILE_T_0_200
SE_SC_REC_MOBILE_T_0_500
SE_SC_REC_MOBILE_T_0_2048
SE_SC_REC_MOBILE_T_0_3072
SE_SC_REC_MOBILE_T_0_5120

SE_SC_REC_MOBILE_T_100_0
SE_SC_REC_MOBILE_T_100_200

SE_SC_REC_MOBILE_T_200_0
SE_SC_REC_MOBILE_T_200_200
SE_SC_REC_MOBILE_T_200_500
SE_SC_REC_MOBILE_T_200_1024
SE_SC_REC_MOBILE_T_200_2048

SE_SC_REC_MOBILE_T_UNL_2048

• Commit 2: Hide discontinued products when changing tariff