[MPI] bugfixes

- MAGETWO-63042: Make price error aggregator messages more detailed

[EPAM] Added default price field to CatalogProductSimple fixture and updated date source to use timezone

[East] Bugfixes

- Changed copyright year

- Changed copyright year

# Conflicts:
#	app/code/Magento/CatalogInventory/Block/Plugin/ProductView.php
#	app/code/Magento/CatalogInventory/Test/Unit/Block/Plugin/ProductViewTest.php
#	app/code/Magento/CatalogInventory/view/adminhtml/ui_component/product_form.xml
#	app/code/Magento/Checkout/Model/Cart.php
#	app/code/Magento/Sales/Setup/InstallSchema.php
#	app/code/Magento/Sales/Setup/UpgradeSchema.php
#	app/code/Magento/Sales/etc/module.xml
#	app/code/Magento/Shipping/Model/Shipping.php
#	app/code/Magento/Vault/Model/PaymentTokenRepository.php
#	dev/tests/functional/tests/app/Magento/Checkout/Test/Constraint/AssertCancelSuccessMessageInShoppingCart.php
#	dev/tests/integration/testsuite/Magento/EncryptionKey/Model/ResourceModel/Key/ChangeTest.php
#	dev/tests/integration/testsuite/Magento/Vault/Model/PaymentTokenRepositoryTest.php

- Added use_default_price field to CatalogProductSimple fixture
- Added use_default_price field to product form
- Modified LiselectstoreElement to work with context
- Modified date data source to work with magento timezone
- Added magento_timezone environment variable to phpunit.xml.dist
- Added price scope setting to the config data repository

# Conflicts:
#	lib/internal/Magento/Framework/Console/Cli.php
#	setup/src/Magento/Setup/Console/CompilerPreparation.php
#	setup/src/Magento/Setup/Test/Unit/Console/CompilerPreparationTest.php