**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
"airflow dags test <DAG_ID> <EXECUTION_DATE> --save-dagrun output.png\n"
                     "\n"
                     "If you want to create a DOT file then you should execute the following command:\n"
                     "airflow dags test <DAG_ID> <EXECUTION_DATE> --save-dagrun output.dot\n"),
        func=lazy_load_command('airflow.cli.commands.dag_command.dag_test'),
        args=(
            ARG_DAG_ID, ARG_EXECUTION_DATE, ARG_SUBDIR, ARG_SHOW_DAGRUN, ARG_IMGCAT_DAGRUN, ARG_SAVE_DAGRUN
        ),
    ),
)
TASKS_COMMANDS = (
    ActionCommand(
        name='list',
        help="List the tasks within a DAG",
        func=lazy_load_command('airflow.cli.commands.task_command.task_list'),
        args=(ARG_DAG_ID, ARG_TREE, ARG_SUBDIR),
    ),
    ActionCommand(
        name='clear',
        help="Clear a set of task instance, as if they never ran",
        func=lazy_load_command('airflow.cli.commands.task_command.task_clear'),
        args=(
            ARG_DAG_ID, ARG_TASK_REGEX, ARG_START_DATE, ARG_END_DATE, ARG_SUBDIR, ARG_UPSTREAM,
            ARG_DOWNSTREAM, ARG_YES, ARG_ONLY_FAILED, ARG_ONLY_RUNNING, ARG_EXCLUDE_SUBDAGS,
            ARG_EXCLUDE_PARENTDAG, ARG_DAG_REGEX
        ),
    ),
    ActionCommand(
        name='state',
        help="Get the status of a task instance",