Generate the config files using a TOML parser

Now we don't need to change both the template and the resources to add
options

site-cookbooks/kosmos-parity/recipes/default.rb

@@ -33,25 +33,55 @@ dpkg_package "parity" do
 end
 
 parity_node "dev" do
-  config chain: "dev",
-         network_port: 30303,
-         json_rpc_port: 8545,
-         dapps_port: 8090,
-         ui_port: 8180
+  config parity: {
+           chain: "dev",
+         },
+         network: {
+           port: 30303,
+         },
+         rpc: {
+           port: 8545,
+         },
+         dapps: {
+           port: 8090,
+         },
+         ui: {
+           port: 8180,
+         }
 end
 
 parity_node "testnet" do
-  config chain: "ropsten",
-         network_port: 30304,
-         json_rpc_port: 8546,
-         dapps_port: 8091,
-         ui_port: 8181
+  config parity: {
+           chain: "ropsten",
+         },
+         network: {
+           port: 30304,
+         },
+         rpc: {
+           port: 8546,
+         },
+         dapps: {
+           port: 8091,
+         },
+         ui: {
+           port: 8181,
+         }
 end
 
 parity_node "mainnet" do
-  config chain: "homestead",
-         network_port: 30305,
-         json_rpc_port: 8547,
-         dapps_port: 8092,
-         ui_port: 8182
+  config parity: {
+           chain: "homestead",
+         },
+         network: {
+           port: 30305,
+         },
+         rpc: {
+           port: 8547,
+         },
+         dapps: {
+           port: 8092,
+         },
+         ui: {
+           port: 8182,
+         }
 end