dom0/qvm-dom0-update: Filter yum options in dom0

Eg. don't pass --enablerepo to yum install.

dom0/qvm-tools/qvm-dom0-update

@@ -29,8 +29,26 @@ qvm-run -a $UPDATEVM true || exit 1
 qvm-run --pass_io $UPDATEVM "/usr/lib/qubes/qubes_download_dom0_updates.sh --doit --nogui $*" || exit 1
 # Wait for download completed
 while pidof -x qubes-receive-updates >/dev/null; do sleep 0.5; done
-if [ $# -gt 0 ]; then
+PKGS=
+OPTS=
+# Filter out some yum options and collect packages list
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --enablerepo=*|\
+        --disablerepo=*|\
+        --clean)
+            ;;
+        -*)
+            OPTS="$OPTS $1"
+            ;;
+        *)
+            PKGS="$PKGS $1"
+            ;;
+    esac
+    shift
+done
 
+if [ "x$PKGS" != "x" ]; then
     ID=$(id -ur)
     if [ $ID != 0 ] ; then
         echo "This script should be run as root, use sudo next time."
@@ -38,7 +56,7 @@ if [ $# -gt 0 ]; then
         exit
     fi
 
-    yum install $@
+    yum $OPTS install $PKGS
 elif [ -f /var/lib/qubes/updates/repodata/repomd.xml ]; then
     # Above file exists only when at least one package was downloaded
     yum check-update
@@ -50,7 +68,7 @@ elif [ -f /var/lib/qubes/updates/repodata/repomd.xml ]; then
             echo "Now you can manually run yum update (use sudo again)."
             exit
         fi
-        yum update
+        yum $OPTS update
     fi
 else
     echo "No updates avaliable"