[Issue #2548] Swap analytics to new step function pattern (#2546)

## Summary

Relates to #2548

### Time to review: __2 mins__

## Changes proposed

Swaps the analytics application to the new step functions pattern that I
originally merged in
#2506. The size of the red
diff and the simplicity of the new configuration show have valuable the
new pattern is.

## Context for reviewers

The step function is now running, but the CLI itself is currently
broken. eg. the CLI is currently broken everywhere, even locally. Fixing
that is someone else's job though!

infra/analytics/app-config/env-config/environment-variables.tf

@@ -3,9 +3,13 @@ locals {
   # This is a map rather than a list so that variables can be easily
   # overridden per environment using terraform's `merge` function
   default_extra_environment_variables = {
-    MB_DB_TYPE   = "postgres"
-    MB_DB_USER   = "metabaseuser"
-    MB_DB_DBNAME = "metabase"
+    MB_DB_TYPE      = "postgres"
+    MB_DB_USER      = "metabaseuser"
+    MB_DB_DBNAME    = "metabase"
+    PY_RUN_APPROACH = "local"
+    SPRINT_FILE     = "/tmp/sprint-data.json"
+    ISSUE_FILE      = "/tmp/issue-data.json"
+    OUTPUT_DIR      = "/tmp/"
   }
 
   # Configuration for secrets

infra/analytics/app-config/env-config/outputs.tf

@@ -24,6 +24,10 @@ output "service_config" {
   }
 }
 
+output "scheduled_jobs" {
+  value = local.scheduled_jobs
+}
+
 output "domain" {
   value = var.domain
 }

infra/analytics/app-config/env-config/scheduled_jobs.tf

@@ -0,0 +1,15 @@
+locals {
+  # The `task_command` is what you want your scheduled job to run, for example: ["poetry", "run", "flask"].
+  # Schedule expression defines the frequency at which the job should run.
+  # The syntax for `schedule_expression` is explained in the following documentation:
+  # https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-scheduled-rule-pattern.html
+  # The `state` is the state of the scheduled job. It can be either "ENABLED" or "DISABLED".
+
+  scheduled_jobs = {
+    sprint-reports = {
+      task_command        = ["make", "gh-data-export", "sprint-reports"]
+      schedule_expression = "rate(1 days)"
+      state               = "ENABLED"
+    }
+  }
+}

infra/analytics/service/main.tf

@@ -115,6 +115,8 @@ module "service" {
   cpu                   = 1024
   memory                = 2048
 
+  readonly_root_filesystem = false
+
   # This is a task based service, not a web server, so we don't need to run any instances of the service at rest.
   desired_instance_count = 0
 
@@ -123,6 +125,8 @@ module "service" {
   app_access_policy_arn      = data.aws_iam_policy.app_db_access_policy[0].arn
   migrator_access_policy_arn = data.aws_iam_policy.migrator_db_access_policy[0].arn
 
+  scheduled_jobs = local.environment_config.scheduled_jobs
+
   db_vars = {
     security_group_ids = data.aws_rds_cluster.db_cluster[0].vpc_security_group_ids
     connection_info = {