MINOR: Remove SNAPSHOT Suffixes in Gradle (#35577)

* MINOR: Remove SNAPSHOT Suffixes in Gradle

* The snapshot qualifiers here are redundant and 6.5.0 is released anyway

Author: original-brownbear

buildSrc/src/main/groovy/org/elasticsearch/gradle/test/ClusterConfiguration.groovy

@@ -69,7 +69,11 @@ class ClusterConfiguration {
      */
     @Input
     Closure<Integer> minimumMasterNodes = {
-        return getNumNodes() > 1 ? getNumNodes() : -1
+        if (bwcVersion != null && bwcVersion.before("6.5.0")) {
+            return numNodes > 1 ? numNodes : -1
+        } else {
+            return numNodes > 1 ? numNodes.intdiv(2) + 1 : -1
+        }
     }
 
     @Input

buildSrc/src/main/groovy/org/elasticsearch/gradle/test/ClusterFormationTasks.groovy

@@ -124,7 +124,7 @@ class ClusterFormationTasks {
             nodes.add(node)
             Closure<Map> writeConfigSetup
             Object dependsOn
-            if (node.nodeVersion.onOrAfter("6.5.0-SNAPSHOT")) {
+            if (node.nodeVersion.onOrAfter("6.5.0")) {
                 writeConfigSetup = { Map esConfig ->
                     // Don't force discovery provider if one is set by the test cluster specs already
                     if (esConfig.containsKey('discovery.zen.hosts_provider') == false) {