Flask: Decrease verbosity of logs

[cklamann]

• remove debugging info statements wherever possible
• perform a brief "audit" of existing logs/logging statements in order to help team arrive at a standard for future development. What existing logs are useful? Which are extraneous? What is/should be the difference between 'debug' and 'info'?
• update logs to reflect new standards
• allow SQLAlchemy logs to be disabled with an env variable

[kevinlul]

Sidecar logging proof-of-concept with a FIFO/named pipe:

version: "3.9"
services:
  primary:
    image: ubuntu:20.04
    command: bash -c 'set -euo pipefail;
      if [[ ! -p /var/log/app/logs.fifo ]]; then
         mkfifo /var/log/app/logs.fifo;
      fi;
      while true; do
        date -Is > /var/log/app/logs.fifo;
        echo `date -Is` Hello;
        sleep 5;
      done'
    volumes:
      - logs:/var/log/app
  sidecar:
    image: ubuntu:20.04
    command: tail -f /var/log/app/logs.fifo
    volumes:
      - logs:/var/log/app
    depends_on:
      - primary
volumes:
  logs: