feature #32231 [HttpClient] Add support for NTLM authentication (nicolas-grekas)

This PR was merged into the 4.4 branch.

Discussion
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[HttpClient] Add support for NTLM authentication

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Someone mentioned NTLM auth on Twitter, so here we are, this adds support for it.
Requires curl.

Commits
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548f4fd0ea [HttpClient] Add support for NTLM authentication

Author: fabpot

DependencyInjection/Configuration.php

@@ -1399,6 +1399,9 @@ private function addHttpClientSection(ArrayNodeDefinition $rootNode)
                                     ->scalarNode('auth_bearer')
                                         ->info('A token enabling HTTP Bearer authorization.')
                                     ->end()
+                                    ->scalarNode('auth_ntlm')
+                                        ->info('A "username:password" pair to use Microsoft NTLM authentication (requires the cURL extension).')
+                                    ->end()
                                     ->arrayNode('query')
                                         ->info('Associative array of query string values merged with the base URI.')
                                         ->useAttributeAsKey('key')