systemd: disable nss-mymachines and nss-resolve

:Release Notes:

:Detailed Notes:
nss-mymachines depends on machined which is disabled:
meson.build:1382:24: ERROR: Problem encountered: nss-mymachines is requested but machined is disabled
http://caprica.lgsvl.com:8080/Errors/Details/1437073

nss-resolved depends on resolved which is disabled:
meson.build:1382:24: ERROR: Problem encountered: nss-resolve is requested but resolve is disabled
http://caprica.lgsvl.com:8080/Errors/Details/1440610

:Testing Performed:
Only build tested.

:QA Notes:
No change to image.

:Issues Addressed:
[PLAT-77937] Create GPVB with Yocto 2.7
[PLAT-115142] CCC: Upgrade to Yocto 2.7 Warrior

Change-Id: I0e8c3e2c9c72cb615cc01628a5f6778c104cadc0

meta-webos/recipes-core/systemd/systemd_%.bbappend

@@ -1,4 +1,4 @@
-# Copyright (c) 2017-2019 LG Electronics, Inc.
+# Copyright (c) 2017-2020 LG Electronics, Inc.
 
 EXTENDPRAUTO_append = "webos4"
 
@@ -13,6 +13,7 @@ RDEPENDS_${PN}_remove = "update-rc.d"
 PACKAGECONFIG_remove = " \
     networkd    \
     resolved    \
+    nss-resolve \
     timedated   \
     timesyncd   \
 "