refactor: Default to Proxy Tracer in instrumentations #1929

Job	Run time
other / dalli / ubuntu-latest	2m 50s
kafka / racecar / ubuntu-latest	11m 34s
other / mongo / ubuntu-latest	2m 48s
kafka / rdkafka / ubuntu-latest	10m 25s
kafka / ruby_kafka / ubuntu-latest	4m 34s
mysql / mysql2 / ubuntu-latest	2m 3s
postgresql / pg / ubuntu-latest	3m 32s
mysql / trilogy / ubuntu-latest	1m 9s
postgresql / que / ubuntu-latest	1m 42s
rabbitmq / bunny / ubuntu-latest	58s
redis / redis / ubuntu-latest	2m 15s
redis / resque / ubuntu-latest	1m 47s
redis / sidekiq / ubuntu-latest	4m 59s
	50m 36s

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