Add packages info

pkg/controller/jenkins/client/doc.go

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+// Package client contains client for Jenkins API
+package client

pkg/controller/jenkins/configuration/base/doc.go

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+// Package base is responsible for create Jenkins master pod and it's base configuration
+package base

pkg/controller/jenkins/configuration/user/doc.go

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+// Package user is responsible for Jenkins user configuration
+package user

pkg/controller/jenkins/resources/doc.go

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+// Package resources contains Kubernetes resources required by Jenkins
+package resources