Remove install of vlan/vconfig from base

vconfig is actually deprecated in favor of the ip command, and is not
available on some newer distros (RHEL 7 at least). I'm not honestly sure
why it needs to be installed in all images anyway. I traced the origins
of installing the vlan package here all the way back to the first dib
git import from some other repo...so, I don't see any obvious reason why
it needs to be installed.

Change-Id: I272667cf29f5e41c217a26f70937b2842a04f748

elements/base/install.d/00-baseline-environment

@@ -7,4 +7,4 @@ fi
 set -eu
 set -o pipefail
 
-install-packages -m base vlan_package iscsi_package
+install-packages -m base iscsi_package

elements/base/pkg-map

@@ -1,7 +1,6 @@
 {
   "family": {
     "redhat": {
-      "vlan_package": "vconfig",
       "iscsi_package": "iscsi-initiator-utils"
     },
     "suse": {
@@ -11,7 +10,6 @@
   "default": {
     "ccache_package": "ccache",
     "dkms_package": "dkms",
-    "vlan_package": "vlan",
     "iscsi_package": "open-iscsi"
   }
 }