[MERGE] Convert remaining yml files and remove yml import engine

addons/account/demo/account_bank_statement.yml

addons/account/demo/account_invoice_demo.yml

addons/account_asset/__manifest__.py

addons/account_asset/data/account_asset_demo.yml

addons/auth_oauth/__manifest__.py

addons/auth_oauth/data/auth_oauth_data.xml

addons/auth_oauth/data/auth_oauth_data.yml

addons/l10n_be/__manifest__.py

addons/l10n_be/demo/l10n_be_demo.xml

addons/l10n_be/demo/l10n_be_demo.yml

addons/l10n_generic_coa/__manifest__.py

addons/l10n_generic_coa/data/account_bank_statement_demo.xml

addons/l10n_generic_coa/data/account_invoice_demo.xml

addons/mrp/__manifest__.py

addons/mrp/data/mrp_data.xml

addons/mrp/data/mrp_data.yml

addons/mrp/data/mrp_demo.xml

addons/mrp/data/mrp_lot_demo.yml

addons/mrp_repair/__manifest__.py

addons/mrp_repair/data/mrp_repair_demo.xml