dracut: add grep to the network module dependencies

Closes: #9942 [via git-merge-pr]

srcpkgs/dracut/patches/network_install_grep.patch

@@ -0,0 +1,21 @@
+--- modules.d/40network/module-setup.sh     2017-08-11 13:44:06.000000000 +0200
++++ modules.d/40network/module-setup.sh     2017-12-12 19:47:35.691067368 +0100
+@@ -4,7 +4,7 @@
+ check() {
+     local _program
+
+-    require_binaries ip dhclient || return 1
++    require_binaries ip dhclient sed awk grep || return 1
+     require_any_binary arping arping2 || return 1
+
+     return 255
+@@ -24,7 +24,7 @@
+ # called by dracut
+ install() {
+     local _arch _i _dir
+-    inst_multiple ip dhclient sed awk
++    inst_multiple ip dhclient sed awk grep
+
+     inst_multiple -o arping arping2
+     strstr "$(arping 2>&1)" "ARPing 2" && mv "$initdir/bin/arping" "$initdir/bin/arping2"
+

srcpkgs/dracut/template

@@ -1,7 +1,7 @@
 # Template file for 'dracut'
 pkgname=dracut
 version=046
-revision=1
+revision=2
 build_style=configure
 configure_args="--prefix=/usr --sysconfdir=/etc"
 hostmakedepends="libxslt docbook-xsl asciidoc pkg-config"