Add container dependencies to the ECS canaries (#359)

*Issue description:*
ECS canaries failed intermittently due to incorrect container start
sequence.

*Description of changes:*
Add container dependencies to the default app container to wait until
init container to complete and cwa container to start.

*Rollback procedure:*

<Can we safely revert this commit if needed? If not, detail what must be
done to safely revert and why it is needed.>

*Ensure you've run the following tests on your changes and include the
link below:*

To do so, create a `test.yml` file with `name: Test` and workflow
description to test your changes, then remove the file for your PR. Link
your test run in your PR description. This process is a short term
solution while we work on creating a staging environment for testing.

NOTE: TESTS RUNNING ON A SINGLE EKS CLUSTER CANNOT BE RUN IN PARALLEL.
See the
[needs](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idneeds)
keyword to run tests in succession.
- Run Java EKS on `e2e-playground` in us-east-1 and eu-central-2
- Run Python EKS on `e2e-playground` in us-east-1 and eu-central-2
- Run metric limiter on EKS cluster `e2e-playground` in us-east-1 and
eu-central-2
- Run EC2 tests in all regions
- Run K8s on a separate K8s cluster (check IAD test account for master
node endpoints; these will change as we create and destroy clusters for
OS patching)

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

terraform/java/ecs/resources/main-service.json.tpl

@@ -54,10 +54,10 @@
         "name": "OTEL_PROPAGATORS",
         "value": "tracecontext,baggage,b3,xray"
       },
-     {
-       "name": "OTEL_INSTRUMENTATION_COMMON_EXPERIMENTAL_CONTROLLER_TELEMETRY_ENABLED",
-       "value": "true"
-     }
+      {
+        "name": "OTEL_INSTRUMENTATION_COMMON_EXPERIMENTAL_CONTROLLER_TELEMETRY_ENABLED",
+        "value": "true"
+      }
     ],
     "mountPoints": [
       {
@@ -66,6 +66,16 @@
         "readOnly": false
       }
     ],
+    "dependsOn": [
+      {
+        "containerName": "init",
+        "condition": "SUCCESS"
+      },
+      {
+        "containerName": "ecs-cwagent",
+        "condition": "START"
+      }
+    ],
     "logConfiguration": {
       "logDriver": "awslogs",
       "options": {

terraform/python/ecs/resources/main-service.json.tpl

@@ -79,6 +79,16 @@
         "readOnly": false
       }
     ],
+    "dependsOn": [
+      {
+        "containerName": "init",
+        "condition": "SUCCESS"
+      },
+      {
+        "containerName": "ecs-cwagent",
+        "condition": "START"
+      }
+    ],
     "logConfiguration": {
       "logDriver": "awslogs",
       "options": {