ddtrace/tracer: handle parent-id header of 0 for synthetics #1285
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Synthetic tests set the header
x-datadog-parent-id
to 0. Currently, the tracer mishandles this and considers that the span id is not set when it is 0.This PR makes sure that header
x-datadog-parent-id
of value 0 is handled correctly when the origin is synthetics.See APMGO-242