Raise `incubator` dependency version to `0.22.0`

doc/02-Installation.md.d/From-Source.md

@@ -20,7 +20,7 @@ Make sure you use `director` as the module name. The following requirements must
 * [Icinga Web](https://github.com/Icinga/icingaweb2) (≥2.8.0). All versions since 2.2 should also work fine, but
   might show smaller UI bugs and are not actively tested
 * The following Icinga modules must be installed and enabled:
-    * [incubator](https://github.com/Icinga/icingaweb2-module-incubator) (≥0.21.0)
+    * [incubator](https://github.com/Icinga/icingaweb2-module-incubator) (≥0.22.0)
     * If you are using Icinga Web <2.9.0, the following modules are also required
         * [ipl](https://github.com/Icinga/icingaweb2-module-ipl) (≥0.5.0)
         * [reactbundle](https://github.com/Icinga/icingaweb2-module-reactbundle) (≥0.9.0)

doc/05-Upgrading.md

@@ -46,7 +46,7 @@ pending database migrations to an imported old database snapshot.
 --------------------------------------------------
 
 Before upgrading, please upgrade the [incubator module](https://github.com/Icinga/icingaweb2-module-incubator)
-to (at least) v0.21.0. As always, you'll be prompted to apply pending Database
+to (at least) v0.22.0. As always, you'll be prompted to apply pending Database
 Migrations.
 
 <a name="upgrade-to-1.10.x"></a>Upgrading to 1.10.x

module.info

@@ -1,6 +1,6 @@
 Name: Icinga Director
 Version: 1.11.1
-Depends: reactbundle (>=0.9.0), ipl (>=0.5.0), incubator (>=0.21.0)
+Depends: reactbundle (>=0.9.0), ipl (>=0.5.0), incubator (>=0.22.0)
 Description: Director - Config tool for Icinga 2
  Icinga Director is a configuration tool that has been designed to make
  Icinga 2 configuration easy and understandable.