[misc] correct test for mysql 8 sha256

Author: rusher

.travis.yml

@@ -33,7 +33,7 @@ install:
         connector-test-machine/launch.bat -t "$srv" -v "$v" -d testj
         ;;
       linux)
-        source connector-test-machine/launch.sh -t "$srv" -v "$v" -d testj -n 0 -l "$local" -p "$packet"
+        source connector-test-machine/launch.sh -t "$srv" -v "$v" -d testj -l "$local" -p "$packet"
         ;;
     esac
 

src/test/java/org/mariadb/jdbc/Sha256AuthenticationTest.java

@@ -89,7 +89,7 @@ public void sha256PluginTestWithServerRsaKey() throws SQLException {
   public void sha256PluginTestWithoutServerRsaKey() throws SQLException {
     Assume.assumeTrue(!Platform.isWindows() && minVersion(8, 0, 0));
     // mysql 8.0.31 broken public key retrieval, so avoid FLUSHING for now
-    Assume.assumeTrue(!isMariadbServer() && !exactVersion(8, 0, 31));
+    Assume.assumeTrue(!isMariadbServer() && !minVersion(8, 0, 31));
 
     try (Connection conn =
         DriverManager.getConnection(
@@ -172,7 +172,7 @@ public void cachingSha256PluginTestWithServerRsaKey() throws SQLException {
   public void cachingSha256PluginTestWithoutServerRsaKey() throws SQLException {
     Assume.assumeTrue(minVersion(8, 0, 0));
     // mysql 8.0.31 broken public key retrieval, so avoid FLUSHING for now
-    Assume.assumeTrue(!isMariadbServer() && !exactVersion(8, 0, 31));
+    Assume.assumeTrue(!isMariadbServer() && !minVersion(8, 0, 31));
 
     try (Connection conn =
         DriverManager.getConnection(