fix: DUNITER_CLIENT_SPEC for both GDev and GTest currencies

node/src/command.rs

@@ -109,7 +109,7 @@ impl SubstrateCli for Cli {
                 const CLIENT_SPEC: &str = "./node/specs/gdev_client-specs.yaml";
                 let client_spec: chain_spec::gdev::ClientSpec = serde_yaml::from_slice(
                     &std::fs::read(
-                        std::env::var("DUNITER_GTEST_CLIENT_SPEC")
+                        std::env::var("DUNITER_CLIENT_SPEC")
                             .unwrap_or_else(|_| CLIENT_SPEC.to_string()),
                     )
                     .map_err(|e| format!("failed to read {CLIENT_SPEC} {e}"))?[..],
@@ -144,7 +144,7 @@ impl SubstrateCli for Cli {
                 const JSON_CLIENT_SPEC: &str = "./node/specs/gtest_client-specs.yaml";
                 let client_spec: gtest::ClientSpec = serde_yaml::from_slice(
                     &std::fs::read(
-                        std::env::var("DUNITER_GTEST_CLIENT_SPEC")
+                        std::env::var("DUNITER_CLIENT_SPEC")
                             .unwrap_or_else(|_| JSON_CLIENT_SPEC.to_string()),
                     )
                     .map_err(|e| format!("failed to read {JSON_CLIENT_SPEC} {e}"))?[..],