added httpx opentelemetry adapter #1981

Job	Run time
action_pack / ubuntu-latest	2m 55s
action_view / ubuntu-latest	2m 25s
active_job / ubuntu-latest	4m 58s
active_model_serializers / ubuntu-latest	1m 24s
active_record / ubuntu-latest	1m 54s
active_support / ubuntu-latest	2m 25s
all / ubuntu-latest	2m 19s
aws_sdk / ubuntu-latest	7m 48s
base / ubuntu-latest	2m 10s
concurrent_ruby / ubuntu-latest	2m 32s
delayed_job / ubuntu-latest	1m 49s
ethon / ubuntu-latest	3m 11s
excon / ubuntu-latest	2m 26s
faraday / ubuntu-latest	4m 20s
grape / ubuntu-latest	8m 17s
graphql / ubuntu-latest	1m 34s
gruf / ubuntu-latest	1m 37s
http / ubuntu-latest	1m 49s
http_client / ubuntu-latest	56s
httpx / ubuntu-latest	54s
koala / ubuntu-latest	53s
lmdb / ubuntu-latest	1m 10s
net_http / ubuntu-latest	2m 22s
rack / ubuntu-latest	1m 32s
rails / ubuntu-latest	3m 43s
restclient / ubuntu-latest	3m 1s
rspec / ubuntu-latest	1m 43s
sinatra / ubuntu-latest	3m 43s
	1h 15m 50s

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