Normalize more booleans. (#5247) (#5250)

(cherry picked from commit 015566fb06)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/cloud/atomic/atomic_container.py

@@ -26,18 +26,18 @@ options:
     backend:
         description:
           - Define the backend to use for the container.
-        required: True
+        required: true
         choices: ["docker", "ostree"]
         type: str
     name:
         description:
           - Name of the container.
-        required: True
+        required: true
         type: str
     image:
         description:
           - The image to use to install the container.
-        required: True
+        required: true
         type: str
     rootfs:
         description:

plugins/modules/cloud/atomic/atomic_image.py

@@ -31,7 +31,7 @@ options:
     name:
         description:
           - Name of the container image.
-        required: True
+        required: true
         type: str
     state:
         description: