[telemetry] Catch NoAdbError when killing the adb server.

BUG=567797,568151

Review URL: https://codereview.chromium.org/1526633003

Cr-Original-Commit-Position: refs/heads/master@{#365102}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: d2faab80fa1d4e178254e4e3e3366423acc6ba15

android/devil/android/device_errors.py

@@ -112,6 +112,6 @@ class NoDevicesError(base_error.BaseError):
 class NoAdbError(base_error.BaseError):
   """Exception for being unable to find ADB."""
 
-  def __init__(self):
+  def __init__(self, msg=None):
     super(NoAdbError, self).__init__(
-        'Unable to find adb.', is_infra_error=True)
+        msg or 'Unable to find adb.', is_infra_error=True)

android/devil/android/sdk/adb_wrapper.py

@@ -115,7 +115,7 @@ class AdbWrapper(object):
           timeout_retry.CurrentTimeoutThreadGroup().GetRemainingTime())
     except OSError as e:
       if e.errno in (errno.ENOENT, errno.ENOEXEC):
-        raise device_errors.NoAdbError()
+        raise device_errors.NoAdbError(msg=str(e))
       else:
         raise