Add ability to set direct access to repositories.

In case of using proxy for APT repositories added ability to exclude
 some repositories to use direct access.

Closes-bug: PROD-36122
Change-Id: I5549498885e3204b4ecb56f7eb8c845cb076507c
diff --git a/README.rst b/README.rst
index 979b077..1b25635 100644
--- a/README.rst
+++ b/README.rst
@@ -1144,6 +1144,35 @@
           http:  http://proxy.host.local:3142
           https: https://proxy.host.local:3143
 
+Package manager direct access setup:
+
+.. code-block:: yaml
+
+    linux:
+      system:
+        ...
+        repo:
+          apt-mk:
+            source: "deb http://apt-mk.mirantis.com/ stable main salt"
+        ...
+        proxy:
+          pkg:
+            enabled: true
+            ftp:   ftp://ftp-proxy-for-apt.host.local:2121
+          ...
+          # NOTE: Global defaults for any other componet that configure proxy on the system.
+          #       If your environment has just one simple proxy, set it on linux:system:proxy.
+          #
+          # fall back system defaults if linux:system:proxy:pkg has no protocol specific entries
+          # as for https and http
+          ftp:   ftp://proxy.host.local:2121
+          http:  http://proxy.host.local:3142
+          https: https://proxy.host.local:3143
+          direct:
+            - 192.168.0.100
+            - repo.wo.proxy.local
+
+
 Package manager proxy setup per repository:
 
 .. code-block:: yaml