gtest genesis parsing

• only embed chainspec when feature enabled
• change existential deposit to match g1v1
• adapt genesis parsing to real-world data

# build with gtest feature
cargo build --release --features gtest --no-default-features
# run with custom genesis
DUNITER_GTEST_GENESIS=~/dev/py-g1-migrator/output/gtest_genesis.json duniter --tmp --alice --chain=gtest_dev

node/src/chain_spec/gtest_genesis.rs

@@ -176,7 +176,7 @@ pub fn build_genesis(
     // IDENTITIES //
     for (name, identity) in &genesis_data.identities {
         // identity name
-        if !validate_idty_name(&name) {
+        if !validate_idty_name(name) {
             return Err(format!("Identity name '{}' is invalid", &name));
         }
 
@@ -239,10 +239,8 @@ pub fn build_genesis(
                 value: common_runtime::IdtyValue {
                     data: IdtyData::new(),
                     next_creatable_identity_on: identity.next_cert_issuable_on,
-                    old_owner_key: match identity.old_owner_key.clone() {
-                        Some(address) => Some((address, 0)), // FIXME old owner key expiration
-                        None => None,
-                    },
+                    // FIXME old owner key expiration
+                    old_owner_key: identity.old_owner_key.clone().map(|address| (address, 0)),
                     // old_owner_key: None,
                     owner_key: identity.owner_key.clone(),
                     // TODO remove the removable_on field of identity
@@ -279,11 +277,11 @@ pub fn build_genesis(
     }
 
     // CERTIFICATIONS //
-    for (_, identity) in &genesis_data.identities {
+    for identity in genesis_data.identities.values() {
         let mut certs = BTreeMap::new();
         for (issuer, expire_on) in &identity.certs_received {
             if let Some(issuer) = &genesis_data.identities.get(issuer) {
-                certs.insert(issuer.index, Some(expire_on.clone()));
+                certs.insert(issuer.index, Some(*expire_on));
                 counter_cert += 1;
             } else {
                 log::error!("Identity '{}' does not exist", issuer);
@@ -355,7 +353,7 @@ pub fn build_genesis(
     for (idty_index, receiver_certs) in &certs_by_receiver {
         if receiver_certs.len() < MIN_CERT as usize {
             let name = identity_index.get(idty_index).unwrap();
-            let identity = genesis_data.identities.get(name.clone()).unwrap();
+            let identity = genesis_data.identities.get(&(*name).clone()).unwrap();
             if identity.membership_expire_on != 0 {
                 log::warn!(
                     "[{}] has received only {}/{} certifications",
@@ -431,14 +429,14 @@ pub fn build_genesis(
     );
     assert_eq!(
         accounts.len(),
-        identity_index.len() + &genesis_data.wallets.len()
+        identity_index.len() + genesis_data.wallets.len()
     );
     // no inactive tech comm
     for tech_com_member in &genesis_data.technical_committee {
         assert!(!inactive_identities.values().any(|&v| v == tech_com_member));
     }
     // no inactive smith
-    for (smith, _) in &genesis_data.smiths {
+    for smith in genesis_data.smiths.keys() {
         assert!(!inactive_identities.values().any(|&v| v == smith));
     }