Migrate lambda executor endpoints from flask to router #7039
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Motivation
We are currently spawning a new flask server for every runtime environment. This is both costly and cannot be shutdown easily, also in need of a lot of tcp ports which can lead to problems when not all ports are accessible from other containers.
Changes
The urls will therefore change from
{LOCALSTACK_IP}:{RANDOM_PORT}/...
to{LOCALSTACK_IP}:{EDGE_PORT}/_localstack_lambda/{ENVIRONMENT_ID}/...
. This can be done without needing to change the runtime init binary.Pair programming with @thrau