Merge remote-tracking branch 'upstream/master' into upstream--develop

* upstream/master:
  Set version to 2.2.2
  Allow only 1 job queue slot for each validation ledger check
  Allow only 1 job queue slot for acquiring inbound ledger.
  Track latencies of certain code blocks, and log if they take too long

src/test/app/LedgerReplay_test.cpp

@@ -106,6 +106,14 @@ public:
         return {};
     }
 
+    virtual void
+    acquireAsync(
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) override
+    {
+    }
+
     virtual std::shared_ptr<InboundLedger>
     find(LedgerHash const& hash) override
     {

src/test/app/Manifest_test.cpp

@@ -255,7 +255,7 @@ public:
             setup.dataDir = getDatabasePath();
             assert(!setup.useGlobalPragma);
 
-            auto dbCon = makeTestWalletDB(setup, dbName);
+            auto dbCon = makeTestWalletDB(setup, dbName, env.journal);
 
             auto getPopulatedManifests =
                 [](ManifestCache const& cache) -> std::vector<Manifest const*> {