**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
help="Show the version",
        func=lazy_load_command('airflow.cli.commands.version_command.version'),
        args=(),
    ),
    ActionCommand(
        name='cheat-sheet',
        help="Display cheat sheet",
        func=lazy_load_command('airflow.cli.commands.cheat_sheet_command.cheat_sheet'),
        args=(),
    ),
    GroupCommand(
        name='connections',
        help="Manage connections",
        subcommands=CONNECTIONS_COMMANDS,
    ),
    GroupCommand(
        name='users',
        help="Manage users",
        subcommands=USERS_COMMANDS,
    ),
    GroupCommand(
        name='roles',
        help='Manage roles',
        subcommands=ROLES_COMMANDS,
    ),
    ActionCommand(
        name='sync-perm',
        help="Update permissions for existing roles and DAGs",
        func=lazy_load_command('airflow.cli.commands.sync_perm_command.sync_perm'),
        args=(),