[SUP-496] Reverted AOU changelog and version. (#347)

* Reverted AOU changelog and version.

* Reverted gatk bump in aou dockerfile, updated conf.json.

Author: n8landolt

config/conf.json

@@ -134,8 +134,10 @@
                 "python",
                 "r"
             ],
-            "packages" : {},
-            "version" : "2.1.9",
+            "packages" : {
+                
+            },
+            "version" : "2.1.8",
             "automated_flags" : {
                 "include_in_ui" : false,
                 "generate_docs" : false,

terra-jupyter-aou/CHANGELOG.md

@@ -1,11 +1,3 @@
-## 2.1.9 - 2022-07-27T13:32:20.021704Z
-
-- Update BOLT-LMM version to v2.4.
-- Update `terra-jupyter-r` to `2.1.6`
-  - Installs AnVIL and supporting packages.
-
-Image URL: `us.gcr.io/broad-dsp-gcr-public/terra-jupyter-aou:2.1.9`
-
 ## 2.1.8 - 2022-07-12
 
 - Revert attempted Java11 upgrade back to Java8