bug #16870 [FrameworkBundle] Disable the server:run command when Proc…

…ess component is missing (gnugat, xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[FrameworkBundle] Disable the server:run command when Process component is missing

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

This also backports the improvement for the `suggest` section from #16650 to the `2.3` branch.

Commits
-------

99d1741 disable server:run cmd without Process component
604174c Suggested Process dependency

src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php

@@ -34,6 +34,10 @@ public function isEnabled()
             return false;
         }
 
+        if (!class_exists('Symfony\Component\Process\Process')) {
+            return false;
+        }
+
         return parent::isEnabled();
     }
 

src/Symfony/Bundle/FrameworkBundle/composer.json

@@ -48,7 +48,8 @@
         "symfony/finder": "For using the translation loader and cache warmer",
         "symfony/form": "For using forms",
         "symfony/validator": "For using validation",
-        "symfony/serializer": "For using the serializer service"
+        "symfony/serializer": "For using the serializer service",
+        "symfony/process": "For using the server:run command"
     },
     "autoload": {
         "psr-0": { "Symfony\\Bundle\\FrameworkBundle\\": "" },