[chore][extension/awsproxy] use configtls.NewDefaultClientConfig (#36… #18304

Job	Run time
arm-unittest-matrix (receiver-0)	5m 26s
arm-unittest-matrix (receiver-1)	7m 26s
arm-unittest-matrix (receiver-2)	8m 39s
arm-unittest-matrix (receiver-3)	6m 37s
arm-unittest-matrix (processor-0)	3m 29s
arm-unittest-matrix (processor-1)	4m 36s
arm-unittest-matrix (exporter-0)	5m 18s
arm-unittest-matrix (exporter-1)	12m 54s
arm-unittest-matrix (exporter-2)	4m 9s
arm-unittest-matrix (exporter-3)	5m 57s
arm-unittest-matrix (extension)	5m 36s
arm-unittest-matrix (connector)	4m 40s
arm-unittest-matrix (internal)	6m 16s
arm-unittest-matrix (pkg)	3m 35s
arm-unittest-matrix (cmd-0)	1m 13s
arm-unittest-matrix (cmd-1)	1m 52s
arm-unittest-matrix (other)	4m 21s
arm-unittest	1s
	1h 32m 5s

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