rename write,read to writeMeta,readMeta

The blobs::DataInterface specifies two methods, write and read which are
meant to be implemented to write or read configuration for the data
interface implementation.

Change-Id: I831a8611596fca50570a4156cbdcfa5c810c0315
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/data_mock.hpp b/test/data_mock.hpp
index 44c3aae..ae8c9c7 100644
--- a/test/data_mock.hpp
+++ b/test/data_mock.hpp
@@ -15,8 +15,8 @@
     MOCK_METHOD0(open, bool());
     MOCK_METHOD0(close, bool());
     MOCK_METHOD1(copyFrom, std::vector<std::uint8_t>(std::uint32_t));
-    MOCK_METHOD1(write, bool(const std::vector<std::uint8_t>&));
-    MOCK_METHOD0(read, std::vector<std::uint8_t>());
+    MOCK_METHOD1(writeMeta, bool(const std::vector<std::uint8_t>&));
+    MOCK_METHOD0(readMeta, std::vector<std::uint8_t>());
 };
 
 } // namespace blobs