restore missing php 5.6 packages when php 7.0 purged

ee/cli/plugins/stack.py

@@ -2578,6 +2578,13 @@ class EEStackController(CementBaseController):
 
                 Log.info(self, "Successfully removed packages")
 
+                if self.app.pargs.php7:
+                    if not EEAptGet.is_installed(self, 'php5.6-fpm'):
+                        Log.info(self, "PHP5.6-fpm found on system.")
+                        Log.info(self, "Verifying and installing missing packages,")
+                        EEShellExec.cmd_exec(self, "apt-get install -y php-memcached php-igbinary")
+
+
     @expose(help="Purge packages")
     def purge(self):
         """Start purging of packages"""
@@ -2740,6 +2747,14 @@ class EEStackController(CementBaseController):
 
                 Log.info(self, "Successfully purged packages")
 
+                if self.app.pargs.php7:
+                    if not EEAptGet.is_installed(self, 'php5.6-fpm'):
+                        Log.info(self, "PHP5.6-fpm found on system.")
+                        Log.info(self, "Verifying and installing missing packages,")
+                        EEShellExec.cmd_exec(self, "apt-get install -y php-memcached php-igbinary")
+
+
+
 def load(app):
     # register the plugin class.. this only happens if the plugin is enabled
     handler.register(EEStackController)