fix(sys-apps/baselayout): Create resolv.conf symlink except in SDK

networkd uses its own location for generating resolv.conf and a new
tmpfiles rule creates a symlink to it in both -generic and -usr images.
This is not applicable to SDK so remove the rule in that case.

sdk_container/src/third_party/coreos-overlay/sys-apps/baselayout/baselayout-9999.ebuild

@@ -117,6 +117,11 @@ src_install() {
 		systemd_dotmpfilesd "${T}/baselayout-usr.conf"
 	fi
 
+	if use cros_host; then
+		# do not install networkd's resolv.conf symlink in SDK
+		rm "${D}"/usr/lib/tmpfiles.d/baselayout-resolv.conf || die
+	fi
+
 	# Fill in all other paths defined in tmpfiles configs
 	tmpfiles_create
 
@@ -132,11 +137,6 @@ src_install() {
 	done
 	echo "LDPATH='${ldpaths#:}'" >> "${D}"/etc/env.d/00basic || die
 
-	if ! use symlink-usr && ! use cros_host; then
-		# move resolv.conf to a writable location
-		dosym /run/resolv.conf /etc/resolv.conf
-	fi
-
 	if ! use symlink-usr ; then
 		# modprobe uses /lib instead of /usr/lib
 		mv "${D}"/usr/lib/modprobe.d "${D}"/lib/modprobe.d || die