Ability to set composer version

[jkaan]

While looking through the issues I saw that there was a request for setting the composer version which was to make sure that the version of composer was consistent between deploys. #2012

I have a problem which can also be solved by being able to set the composer version.

Composer 2.0.0 changed the output of the vendor/composer/installed.json file. Therefore I need to set the version to 1.10.15. Therefore I would say it's actually a good idea to be able to pass the version when installing composer. So that would look similar to this PR: #2110.

Since I have the usecase that I actually need to set the version I think doing this would solve that problem and the previously mentioned problem too. What do you think? I can make a quick PR :).

[antonmedv]

This will be cool to have. Can you work on recipe recipes/composer.php and add composer_version parameter.

[jkaan]

@antonmedv Here's the PR: https://github.com/deployphp/deployer/pull/2222/files :)