adding usage of DNF in Arista 4.30 and higher

Differential Revision: D59270448

fbshipit-source-id: 4ae81e326262083fded5f97fa888c50d4e0d597b

itchef/cookbooks/fb_helpers/README.md

@@ -243,8 +243,8 @@ your node.
 * `node.aristaeos_4_28_or_newer?`
     Is network switch running Arista EOS and OS version is 4.28 or newer
 
-* `node.aristaeos_4_31_or_newer?`
-    Is network switch running Arista EOS and OS version is 4.31 or newer
+* `node.aristaeos_4_30_or_newer?`
+    Is network switch running Arista EOS and OS version is 4.30 or newer
 
 * `node.embedded?`
     Is embedded Linux, implies 'node.aristaeos?'. These devices likely have

itchef/cookbooks/fb_helpers/libraries/node_methods.rb

@@ -540,8 +540,8 @@ def aristaeos_4_28_or_newer?
       self.aristaeos? && self._self_version >= self._canonical_version('4.28')
     end
 
-    def aristaeos_4_31_or_newer?
-      self.aristaeos? && self._self_version >= self._canonical_version('4.31')
+    def aristaeos_4_30_or_newer?
+      self.aristaeos? && self._self_version >= self._canonical_version('4.30')
     end
 
     def embedded?
@@ -1038,7 +1038,7 @@ def filesystem_data
     # returns the version-release of an rpm installed, or nil if not present
     def rpm_version(name)
       if (self.centos? && !self.centos7?) || self.fedora? || self.redhat8? || self.oracle8? || self.redhat9? ||
-        self.oracle9? || self.aristaeos_4_31_or_newer?
+        self.oracle9? || self.aristaeos_4_30_or_newer?
         # returns epoch.version
         v = Chef::Provider::Package::Dnf::PythonHelper.instance.
             package_query(:whatinstalled, name).version