Dependency injection for http client interface

Problem/Motivation

Using \Drupal::httpClient()->request('GET', $cert_url)->getBody(); without proper ClientInterface dependency implementation may occur in injections

Steps to reproduce

N/A

Proposed resolution

Add proper dependency injection for the http client interface

Remaining tasks

Add dependency for http interface insted to use \Drupal::httpClient()

User interface changes

N/A

API changes

N/A

Data model changes

N/A