Pass GHA default environment variables

Author: agrare

lib/manageiq/cross_repo/runner/github.rb

@@ -13,6 +13,17 @@ def self.available?
 
       private
 
+      def env_vars
+        super.merge(
+          "CI"                      => "true",
+          "GITHUB_BASE_REF"         => nil, # TODO: test_repo.base_ref,
+          "GITHUB_REF_NAME"         => test_repo.ref || test_repo.sha,
+          "GITHUB_REPOSITORY"       => test_repo.identifier,
+          "GITHUB_REPOSITORY_OWNER" => test_repo.org,
+          "GITHUB_SERVER_URL"       => "https://github.com"
+        )
+      end
+
       def ci_config
         github_config = YAML.load_file(CONFIG_FILE)