Debian: Change k8s 1.21.8 package name

This changes Debian package name for k8s 1.21.8 from "kubernetes" to
"kubernetes-1.21.8".

Until https://review.opendev.org/c/starlingx/integ/+/831343
is merged, version 1.21.8 is the only packaged version of
kubernetes on StarlingX Debian. In future, multiple kubernetes
versions will be supported on most, if not all, StarlingX releases.
Currently, Debian build server uses the value of 'debname' parameter in
the meta_data.yaml as the package name.
'debname' is an optional parameter in the meta_data.yaml.
If not provided, it uses package dir name as the package name
(kubernetes-1.21.8 in this case), which follows the preferred format
('kubernetes-<version>') for naming different versions of kubernetes
packages distinctly.

Test Plan:
PASS: Package builds successfully
PASS: Image builds successfully.

Story: 2009830
Task: 44638

Signed-off-by: Kaustubh Dhokte <kaustubh.dhokte@windriver.com>
Change-Id: I46f7d9307f4254597557bb8be81ef471dcc7d73d

kubernetes/kubernetes-1.21.8/debian/deb_folder/changelog

@@ -1,3 +1,10 @@
+kubernetes-1.21.8 (1.21.8-2) unstable; urgency=medium
+
+  * Updated package name to be able to support multiple kubernetes versions on stx platform
+
+ -- Kaustubh Dhokte <kaustubh.dhokte@opendev.org>  Fri, 29 Apr 2022 00:20:53 +0000
+
+
 kubernetes (1.21.8-1) unstable; urgency=medium
 
   * Updated for stx debian packaging

kubernetes/kubernetes-1.21.8/debian/deb_folder/control

@@ -1,4 +1,4 @@
-Source: kubernetes
+Source: kubernetes-1.21.8
 Section: admin
 Priority: optional
 Maintainer: StarlingX Developers <StarlingX-discuss@lists.StarlingX.io>

kubernetes/kubernetes-1.21.8/debian/meta_data.yaml

@@ -1,4 +1,3 @@
-debname: kubernetes
 debver: 1.21.8
 dl_path:
   name: kubernetes-1.21.8.tar.gz