Helper function/class to sensor cts test

  * sensorTypeShortString: convert sensor type constant to short,
    human readable string.

  * TestResultCollector: collects multiple test failures and present
    them once at the end.

  * bytesToHex: convert bytes array to hex string for debugging.

Test: compiles
Change-Id: I1a574a49836064eab49e75cca1c9de47b0a165d3
(cherry picked from commit f749c2cf845ce3b8dbffaea2e6b5075f17c132f8)
1 file changed