**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
name='list',
        help='List roles',
        func=lazy_load_command('airflow.cli.commands.role_command.roles_list'),
        args=(ARG_OUTPUT,),
    ),
    ActionCommand(
        name='create',
        help='Create role',
        func=lazy_load_command('airflow.cli.commands.role_command.roles_create'),
        args=(ARG_ROLES,),
    ),
)
CELERY_COMMANDS = (
    ActionCommand(
        name='worker',
        help="Start a Celery worker node",
        func=lazy_load_command('airflow.cli.commands.celery_command.worker'),
        args=(
            ARG_QUEUES, ARG_CONCURRENCY, ARG_CELERY_HOSTNAME, ARG_PID, ARG_DAEMON,
            ARG_UMASK, ARG_STDOUT, ARG_STDERR, ARG_LOG_FILE, ARG_AUTOSCALE, ARG_SKIP_SERVE_LOGS
        ),
    ),
    ActionCommand(
        name='flower',
        help="Start a Celery Flower",
        func=lazy_load_command('airflow.cli.commands.celery_command.flower'),
        args=(
            ARG_FLOWER_HOSTNAME, ARG_FLOWER_PORT, ARG_FLOWER_CONF, ARG_FLOWER_URL_PREFIX,
            ARG_FLOWER_BASIC_AUTH, ARG_BROKER_API, ARG_PID, ARG_DAEMON, ARG_STDOUT, ARG_STDERR,
            ARG_LOG_FILE