Cleanup and remove more files on uninstall

* /etc/nsswitch.conf.ipabkp
* /etc/openldap/ldap.conf.ipabkp
* /var/lib/ipa/sysrestore/*
* /var/named/dyndb-ldap/ipa/
* /var/lib/dirsrv/scripts-%s/

See: https://pagure.io/freeipa/issue/2694
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipaserver/install/dsinstance.py

@@ -1055,12 +1055,18 @@ class DsInstance(service.Service):
             logger.debug("Removing DS instance %s", serverid)
             try:
                 remove_ds_instance(serverid)
-                installutils.remove_keytab(paths.DS_KEYTAB)
-                installutils.remove_ccache(run_as=DS_USER)
             except ipautil.CalledProcessError:
                 logger.error("Failed to remove DS instance. You may "
                              "need to remove instance data manually")
 
+            installutils.remove_keytab(paths.DS_KEYTAB)
+            installutils.remove_ccache(run_as=DS_USER)
+
+            # Remove scripts dir
+            scripts = paths.VAR_LIB_DIRSRV_INSTANCE_SCRIPTS_TEMPLATE % (
+                serverid)
+            installutils.rmtree(scripts)
+
         # Just eat this state
         self.restore_state("user_exists")