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##### SUMMARY
<!--- Explain the problem briefly below -->
Hi, i am trying to read a secret from the following path
        secret: "{{ lookup('hashi_vault', 'namespace={{NAMESPACE}} secret={{ BRAND }}/{{ ENVIRONMENT }}/secrets/placeholder:foo url={{ VAULT_ADDR }} auth_method={{ VAULT_AUTH_METHOD }} role_id={{ VAULT_ROLE_ID }} secret_id={{ VAULT_SECRET_ID }}')}}"

but this fails with no secret found at location. 
we are using enterprise and this uses the KV engine

vault kv get {{ BRAND }}/{{ ENVIRONMENT }}/secrets/placeholder:foo


##### ISSUE TYPE
- Bug Report
unable to read from kv data store

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
hashi_vault

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
2.8
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml

```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->


##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below

```

default: ldap
    ca_cert:
      description: path to certificate to use for authentication.
      aliases: [ cacert ]
    validate_certs:
      description: controls verification and validation of SSL certificates, mostly you only want to turn off with self signed ones.
      type: boolean
      default: True
    namespace:
      version_added: "2.8"
      description: namespace where secrets reside. requires HVAC 0.7.0+ and Vault 0.11+.
"""
EXAMPLES = """
- debug:
    msg: "{{ lookup('hashi_vault', 'secret=secret/hello:value token=c975b780-d1be-8016-866b-01d0f9b688a5 url=http://myvault:8200')}}"
- name: Return all secrets from a path
  debug:
    msg: "{{ lookup('hashi_vault', 'secret=secret/hello token=c975b780-d1be-8016-866b-01d0f9b688a5 url=http://myvault:8200')}}"
- name: Vault that requires authentication via LDAP
  debug:
      msg: "{{ lookup('hashi_vault', 'secret=secret/hello:value auth_method=ldap mount_point=ldap username=myuser password=mypas url=http://myvault:8200')}}"
- name: Vault that requires authentication via username and password
  debug:
      msg: "{{ lookup('hashi_vault', 'secret=secret/hello:value auth_method=userpass username=myuser password=mypas url=http://myvault:8200')}}"
- name: Using an ssl vault
  debug:
      msg: "{{ lookup('hashi_vault', 'secret=secret/hola:value token=c975b780-d1be-8016-866b-01d0f9b688a5 url=https://myvault:8200 validate_certs=False')}}"
- name: using certificate auth
  debug:
      msg: "{{ lookup('hashi_vault', 'secret=secret/hi:value token=xxxx-xxx-xxx url=https://myvault:8200 validate_certs=True cacert=/cacert/path/ca.pem')}}"