Use sudo to remove packages

yum and others need root to remove packages

Change-Id: I556505636c41296f9188c248dff13b85616c667c
diff --git a/functions b/functions
index 0bbf477..edc4bf9 100644
--- a/functions
+++ b/functions
@@ -781,9 +781,9 @@
     if is_ubuntu; then
         apt_get purge "$@"
     elif is_fedora; then
-        yum remove -y "$@"
+        sudo yum remove -y "$@"
     elif is_suse; then
-        rpm -e "$@"
+        sudo rpm -e "$@"
     else
         exit_distro_not_supported "uninstalling packages"
     fi