Add package management upgrade step

Closes-Bug: PROD-34826
Change-Id: I10b539fbc700ae58e085524586e260480b753910
diff --git a/upgrade-mcp-release.groovy b/upgrade-mcp-release.groovy
index 5db2eb2..01c288f 100644
--- a/upgrade-mcp-release.groovy
+++ b/upgrade-mcp-release.groovy
@@ -848,6 +848,8 @@
             }
 
             stage('Update Drivetrain') {
+                salt.enforceState(venvPepper, '*', 'linux.system.package', true, true, batchSize, false, 60, 2)
+
                 if (upgradeSaltStack) {
                     updateSaltStack("I@salt:master", '["salt-master", "salt-common", "salt-api", "salt-minion"]')