[SandboxAnalyzer] Don’t treat a pod as added if it’s local

lib/cocoapods/installer/analyzer/sandbox_analyzer.rb

@@ -104,6 +104,7 @@ module Pod
         def pod_added?(pod)
           return true if resolved_pods.include?(pod) && !sandbox_pods.include?(pod)
           return true unless folder_exist?(pod)
+          return false if !folder_exist?(pod) && !sandbox.local?(pod)
           false
         end