Backport repos structure

Depends-On: https://gerrit.mcp.mirantis.com/#/c/37429/

Change-Id: Idce7bf41b98c9d684381fae7197d74c21dd82ed1
Prod-related: PROD-28395 (PROD:28395)
diff --git a/linux/system/repo/mcp/apt_mirantis/cassandra.yml b/linux/system/repo/mcp/apt_mirantis/cassandra.yml
index 8bf3583..9b651fa 100644
--- a/linux/system/repo/mcp/apt_mirantis/cassandra.yml
+++ b/linux/system/repo/mcp/apt_mirantis/cassandra.yml
@@ -1,14 +1,15 @@
+classes:
+- system.linux.system.repo.keystorage.cassandra
 parameters:
-  _param:
-    apt_mk_version: stable
-    linux_system_repo_mcp_cassandra_version: ${_param:apt_mk_version}
-    linux_system_repo_mcp_cassandra_version_number: "21x"
   linux:
     system:
       repo:
         mcp_cassandra:
-          source: "deb [arch=amd64] http://mirror.mirantis.com/${_param:linux_system_repo_mcp_cassandra_version}/cassandra/${_param:linux_system_codename}/ ${_param:linux_system_repo_mcp_cassandra_version_number} main"
+          source: "deb [arch=amd64] ${_param:linux_system_repo_mcp_cassandra_url}/${_param:linux_system_codename}/ ${_param:linux_system_repo_mcp_cassandra_version} main"
           architectures: amd64
-          key_id: F8358FA2F2833C93
-          key_server: keyserver.ubuntu.com
           clean_file: true
+          key: ${_param:linux_system_repo_mcp_cassandra_key}
+          pin:
+          - pin: 'release o=Apache Cassandra Packages'
+            priority: 1100
+            package: '*'