make-ring: remove hardcoded sudo

Standardize make-ring.py file (other distros don't have sudo hardcoded).
No longer require sudo in a fresh docker container where user is already
root.

Change-Id: I0e1cd8646718300a24ff777e0808170a1d8038a2

make-ring.py

@@ -54,18 +54,18 @@ BREW_INSTALL_SCRIPT = [
 ]
 
 RPM_INSTALL_SCRIPT = [
-    'sudo dnf update',
-    'sudo dnf install -y %(packages)s'
+    'dnf update',
+    'dnf install -y %(packages)s'
 ]
 
 PACMAN_INSTALL_SCRIPT = [
-    'sudo pacman -Sy',
-    'sudo pacman -S %(packages)s'
+    'pacman -Sy',
+    'pacman -S %(packages)s'
 ]
 
 ZYPPER_INSTALL_SCRIPT = [
-    'sudo zypper update',
-    'sudo zypper install -y %(packages)s'
+    'zypper update',
+    'zypper install -y %(packages)s'
 ]
 
 ZYPPER_DEPENDENCIES = [