[SEBA-496]

Update pip packages used in XOS containers, flatten containers
Fixed invalid YAML generated by xosgenx modeldefs.xtarget

Change-Id: Ic051170f3f9ef5a5d0dbba61aa6843458a435d49
diff --git a/lib/xos-config/requirements.txt b/lib/xos-config/requirements.txt
index 5528415..1ed683f 100644
--- a/lib/xos-config/requirements.txt
+++ b/lib/xos-config/requirements.txt
@@ -1,2 +1,2 @@
-PyYAML~=3.12
-pykwalify~=1.6.0
+PyYAML~=5.1
+pykwalify~=1.7.0