Evita configuração múltipla dentro de configuração múltipla.

[SOMA-3827][SOMA-4041]

sga/configuration.lua

@@ -28,7 +28,9 @@ function configuration.read(filename, sga_name)
          -- TODO: O que fazer nesse caso? Avisar que foi ignorado?
          config.sga_name = nil
       end
-      config, err = configuration.get(config.sga[sga_name], filename, config)
+      local config_data = config.sga[sga_name]
+      config.sga = nil
+      config, err = configuration.get(config_data, filename, config)
       if not config then
          return nil, "["..sga_name.."] "..err
       end

sgad-multi.cfg.example

+csbase_server = "http://localhost:40409"
+platform = "Linux26g4"
+-- sgad_bind_addr = "127.0.0.1"
+sgad_host = "localhost"
+sgad_port = 12345
+--sga_name = "chuva"
+status_interval_s = 10
+exec_polling_interval_s = 5
+register_retry_s = 3
+project_root_dir = os.getenv("HOME").."/test/sga-environment/csgrid/projects"
+algorithm_root_dir = os.getenv("HOME").."/test/sga-environment/csgrid/algorithms"
+runtime_data_dir = (os.getenv("TMPDIR") or "/tmp").."/sgad"
+sandbox_root_dir = "/tmp/sgad/sandbox"
+driver = "sga.driver.posix"
+resources = {
+  "java",
+  "lua"
+}
+extra_config = {
+  csbase_transfer_name = "ssh-datatransfer",
+  csbase_csfs_root_dir = "/tmp/csfs_sandbox",
+  ssh_host = "localhost",
+  ssh_port = 22,
+  ssh_user_name = "csgrid",
+  ssh_private_key_path = "/home/csgrid/.ssh/foo_id_rsa"
+}
+
+sga.first = [[
+platform = "Linux44_64"
+sandbox_root_dir = "/tmp/sgad/sandbox-first-chuva"
+]]
+
+sga.second = [[
+sga_name = "second"
+platform = "Linux64e5"
+sandbox_root_dir = "/tmp/sgad/sandbox-second-chuva"
+]]