Fix for Dovecot after MariaDB migration

ee/cli/plugins/stack_migrate.py

@@ -6,6 +6,7 @@ from ee.core.variables import EEVariables
 from ee.core.aptget import EEAptGet
 from ee.core.shellexec import EEShellExec
 from ee.core.apt_repo import EERepo
+from ee.core.services import EEService
 import configparser
 import os
 
@@ -83,7 +84,8 @@ class EEStackMigrateController(CementBaseController):
 
         # If mail server is installed then install dovecot-sql and postfix-sql
         if EEAptGet.is_installed(self, "dovecot-core"):
-            apt_packages = apt_packages + ["dovecot-mysql", "postfix-mysql"]
+            apt_packages = apt_packages + ["dovecot-mysql", "postfix-mysql",
+                                           "libclass-dbi-mysql-perl"]
 
         apt_packages = EEVariables.ee_mysql + ["php5-mysql"]
         Log.info(self, "Updating apt-cache, please wait ...")
@@ -93,6 +95,11 @@ class EEStackMigrateController(CementBaseController):
         EEAptGet.auto_remove(self)
         EEAptGet.install(self, apt_packages)
 
+        # Restart  dovecot and postfix if installed
+        if EEAptGet.is_installed(self, "dovecot-core"):
+            EEService.restart_service(self, 'dovecot')
+            EEService.restart_service(self, 'postfix')
+
     @expose(hide=True)
     def default(self):
         if ((not self.app.pargs.mariadb)):