[exporter/awsxray] Change exporter.awsxray.skiptimestampvalidation fe… #442

Job	Run time
windows-unittest-matrix (receiver-0)	15m 22s
windows-unittest-matrix (receiver-1)	15m 40s
windows-unittest-matrix (processor)	14m 34s
windows-unittest-matrix (exporter)	15m 38s
windows-unittest-matrix (extension)	15m 30s
windows-unittest-matrix (internal)	15m 28s
windows-unittest-matrix (pkg)	11m 18s
windows-unittest-matrix (cmd)	15m 44s
windows-unittest-matrix (other)	15m 50s
windows-unittest	0s
	2h 15m 4s

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