Set install_plugins parameter for jenkins::master
Set install_plugins parameter for jenkins::master

From hiera side we set the following parameter:
fuel_project::jenkins::master::install_plugins: true

But from class fuel_project::jenkins::master this parameter
is nowhere later passed, and it should be passed into
jenkins::master class, into its install_plugins parameter.

Change-Id: Ie1a81ee5968922bdc5fea484ff9ec5d504b4c6fa

fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests