Add binaries preparation to installation steps

Adding binaries preparation into installation steps as rke binary need
to be renamed and helm binary need to be unarchived. Removing those
previously manual steps from BuilGuide

Issue-ID: OOM-1925

Change-Id: I504320fb82e1c8f6db2f99c5dfd4518192eae895
Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>
diff --git a/docs/BuildGuide.rst b/docs/BuildGuide.rst
index cfddcc9..5487862 100644
--- a/docs/BuildGuide.rst
+++ b/docs/BuildGuide.rst
@@ -122,20 +122,7 @@
 
 ToDo: complete and verified list of http files will come just during/after vFWCL testcase
 
-
-**Step 4 - Binaries**
-
-::
-
-       # Binaries are downloaded in step one but some post processing is still needed.
-       # This will be improved in future in installer itself
-
-       tar -xf ../resources/downloads/helm-v2.12.3-linux-amd64.tar.gz linux-amd64/helm -O > ../resources/downloads/helm
-       rm -f ../resources/downloads/helm-v2.12.3-linux-amd64.tar.gz
-       mv ../resources/downloads/rke_linux-amd64 rke
-
-
-**Step 5 - Create repo**
+**Step 4 - Create repo**
 
 ::
 
@@ -304,11 +291,8 @@
 
 ::
 
-       # Following step will download and prepare rke, kubectl and helm binaries
+       # Following step will download rke, kubectl and helm binaries
        ./build/download/download.py --http ./build/data_lists/infra_bin_utils.sh ../resources/downloads
-       tar -xf ../resources/downloads/helm-v2.12.3-linux-amd64.tar.gz linux-amd64/helm -O > ../resources/downloads/helm
-       rm -f ../resources/downloads/helm-v2.12.3-linux-amd64.tar.gz
-       mv ../resources/downloads/rke_linux-amd64 rke
 
 **Step 7 - rpms**