custom_pulp_settings config map requires double quotation

Version
Pulp Operator 1.0.1

Describe the bug
When using custom_pulp_settings on the Operator, that requires quoting. Otherwise python processes complain about syntax errors.

To Reproduce
Steps to reproduce the behavior:

1. Add the following ConfigMap

apiVersion: v1
kind: ConfigMap
metadata:
  name: pulp-custom-config
  namespace: pulp-operator
data:
  CONTENT_ORIGIN: "https://repo.home-organization.com/"

2. Add pulp_custom_config: pulp-custom-config to the Pulp CRD.

Expected behavior
The new content origin is accepted and properly quoted inserted into the secret at settings.py.

Actual behavior
I get a Syntax error, as this is rendered as

CONTENT_ORIGIN = https://repo.home-organization.com/

within the settings.py

Additional context
This can be worked around using double quotation on the yaml file:

apiVersion: v1
kind: ConfigMap
metadata:
  name: pulp-custom-config
  namespace: pulp-operator
data:
  CONTENT_ORIGIN: '"https://repo.home-organization.com/"'

But that wouldn't be something that I would expect. Additionally I'm a bit puzzled why this was not catched in testing, as it looks to me like you would directly stumble upon this issue

Reproduce the issue with the shown ConfigMap and the Pulp CRD setting, then trace how the operator renders custom configuration into settings.py. Check the generated settings.py for the unquoted CONTENT_ORIGIN value. Done means a normal YAML URL is accepted without nested quotation and the rendered Python remains valid.