Update Unit Tests for 2019-02-02 Version

[alzimmermsft]

Changes where made to how the service handles Content-MD5 and a new header x-ms-content-crc64. Some tests were expecting Content-MD5 but they not longer return it, additionally passing both Content-MD5 and x-ms-content-crc64 is invalid.

There may be additional changes that need to be tested but the above is known.

[alzimmermsft]

These APIs are returning correctly based on what was sent to the service, closing on this issue as CRC64 is allowed in these cases and we are also testing cases with MD5 are functioning properly.