Removed the test-grid-blobstore interface, just use test-grid-gae-blobstore directly where necessary
Removed the test-grid-blobstore interface, just use test-grid-gae-blobstore directly where necessary

cl-test-grid/cl-test-grid,cl-test-grid/cl-test-grid,cl-test-grid/cl-test-grid,cl-test-grid/cl-test-grid,cl-test-grid/cl-test-grid