Docs: Enterprise 6.6 (#21666)

* Docs: gitlab team-sync documented correctly

* docs: initial docs for whitelabeling

* Docs: enterprise repositories

* Docs: rpm enterprise install

* Docs: re-structured the rpm install page to be more similar to the deb page

* Docs: responded to review feedback

* Docs: recommends the enterprise edition

* Update docs/sources/installation/debian.md

docs/sources/enterprise/white-labeling.md

@@ -0,0 +1,56 @@
++++
+title = "White-labeling"
+description = "White-labeling"
+keywords = ["grafana", "white-labeling", "enterprise"]
+aliases = ["/docs/grafana/latest/enterprise/white-labeling/"]
+type = "docs"
+[menu.docs]
+name = "White-labeling"
+parent = "enterprise"
+weight = 5
++++
+
+# White labeling
+
+> Only available in Grafana Enterprise v6.6+. Read more about [Grafana Enterprise]({{< relref "../enterprise" >}}).
+
+{{< docs-imagebox img="/img/docs/v66/whitelabeling_1.png" max-width="800px" caption="White labeling example" >}}
+
+This release adds new white labeling options to the `grafana.ini` file (can also be set via ENV variables).
+
+You can change the following elements:
+
+- Login Background
+- Login Logo
+- Side menu top logo
+- Footer & Help menu links
+- Fav icon (shown in browser tab)
+
+> You will have to host your logo and other images used by the white labeling feature separately
+
+```ini
+# Enterprise only
+[white_labeling]
+# Set to complete url to override login logo
+;login_logo =
+
+# Set to complete css background expression to override login background
+# example: login_background = url(http://www.bhmpics.com/wallpapers/starfield-1920x1080.jpg)
+;login_background =
+
+# Set to complete url to override menu logo
+;menu_logo =
+
+# Set to complete url to override fav icon (icon shown in browser tab)
+;fav_icon =
+
+# Set to complete url to override apple/ios icon
+;apple_touch_icon =
+
+# Below is an example for how to replace the default footer & help links with 2 custom links
+;footer_links = support guides
+;footer_links_support_text = Support
+;footer_links_support_url = http://your.support.site
+;footer_links_guides_text = Guides
+;footer_links_guides_url = http://your.guides.site
+```