Include instructions on how to set kubectl config vars if they are incorrect or if modifying an existing project
Include instructions on how to set kubectl config vars if they are
incorrect or if modifying an existing project

Change-Id: Ie251cd767db2f55e3a7efeef19e49388f2b46742

google/data-transfer-project,google/data-transfer-project,google/data-transfer-project,google/data-transfer-project,google/data-transfer-project