d/control: add cloud-sigma and smart-os packages

Add cloud-init-cloud-sigma and cloud-init-smart-os binary packages
depending on cloud-init-base and python3-serial.

Removes python3-serial from cloud-init-base and add it to cloud-init.

Fixes SC-1854
US120

debian/control

@@ -39,7 +39,6 @@ Depends: cloud-guest-utils | cloud-utils,
          python3,
          python3-debconf,
          python3-requests,
-         python3-serial,
          ${misc:Depends},
          ${python3:Depends}
 Recommends: eatmydata, gdisk, gnupg, python3-apt, software-properties-common
@@ -50,9 +49,28 @@ Description: initialization and customization tool for cloud instances
  Cloud-init with minimal dependencies, refer to cloud-init for more
  information.
 
+Package: cloud-init-cloud-sigma
+Architecture: all
+Depends: cloud-init-base,
+         python3-serial,
+         ${misc:Depends},
+Description: Cloud Sigma specific cloud-init
+ This metapackage depends on cloud-init-base and additional packages for
+ Cloud Sigma.
+
+Package: cloud-init-smart-os
+Architecture: all
+Depends: cloud-init-base,
+         python3-serial,
+         ${misc:Depends},
+Description: Smart OS specific cloud-init
+ This metapackage depends on cloud-init-base and additional packages for
+ Smart OS.
+
 Package: cloud-init
 Architecture: all
 Depends: cloud-init-base,
+         python3-serial,
          ${misc:Depends},
 Description: initialization and customization tool for cloud instances
  Cloud-init is the industry standard multi-distribution method for