**Apache Airflow version**: 1.10.12

**Kubernetes version** : 1.17.9

**Environment**:

- **Cloud provider or hardware configuration**: Azure Kubernetes Service
- **OS** (e.g. from /etc/os-release): Linux
- **Install tools**: Helm chart (/chart in repo) 
- **Others**:

**What happened**:
Pod cannot run since `airflow-cleanup-pods` is not in $PATH
```
Error: failed to start container "airflow-cleanup-pods": Error response from daemon: OCI runtime create failed: container_linux.go:349: starting container process caused "exec: \"airflow-cleanup-pods\": executable file not found in $PATH": unknown
```

**What you expected to happen**: 
Cleanup job pod runs

<!-- What do you think went wrong? -->

**How to reproduce it**:
* Deploy Helm Chart
* Manually trigger `airflow-cleanup ` CronJob 
* See it cannot run since `airflow-cleanup-pods` is not in $PATH
airflow/cli/cli_parser.py
func=lazy_load_command('airflow.cli.commands.task_command.task_state'),
        args=(ARG_DAG_ID, ARG_TASK_ID, ARG_EXECUTION_DATE, ARG_SUBDIR),
    ),
    ActionCommand(
        name='failed-deps',
        help="Returns the unmet dependencies for a task instance",
        description=(
            "Returns the unmet dependencies for a task instance from the perspective of the scheduler. "
            "In other words, why a task instance doesn't get scheduled and then queued by the scheduler, "
            "and then run by an executor."
        ),
        func=lazy_load_command('airflow.cli.commands.task_command.task_failed_deps'),
        args=(ARG_DAG_ID, ARG_TASK_ID, ARG_EXECUTION_DATE, ARG_SUBDIR),
    ),
    ActionCommand(
        name='render',
        help="Render a task instance's template(s)",
        func=lazy_load_command('airflow.cli.commands.task_command.task_render'),
        args=(ARG_DAG_ID, ARG_TASK_ID, ARG_EXECUTION_DATE, ARG_SUBDIR),
    ),
    ActionCommand(
        name='run',
        help="Run a single task instance",
        func=lazy_load_command('airflow.cli.commands.task_command.task_run'),
        args=(
            ARG_DAG_ID, ARG_TASK_ID, ARG_EXECUTION_DATE, ARG_SUBDIR, ARG_MARK_SUCCESS, ARG_FORCE,
            ARG_POOL, ARG_CFG_PATH, ARG_LOCAL, ARG_RAW, ARG_IGNORE_ALL_DEPENDENCIES,
            ARG_IGNORE_DEPENDENCIES, ARG_IGNORE_DEPENDS_ON_PAST, ARG_SHIP_DAG, ARG_PICKLE, ARG_JOB_ID,
            ARG_INTERACTIVE,
        ),