Skip rolling upgrade bwc on major version change

Signed-off-by: Daniel Widdis <[email protected]>

build.gradle

@@ -521,6 +521,7 @@ List<Provider<RegularFile>> plugins = [
 // This results in a mixed cluster with 2 nodes on the old version and 1 upgraded node.
 // This is also used as a one third upgraded cluster for a rolling upgrade.
 task "${baseName}#mixedClusterTask"(type: StandaloneRestIntegTestTask) {
+    onlyIf { isSameMajorVersion }
     useCluster testClusters."${baseName}0"
     dependsOn "${baseName}#oldVersionClusterTask0"
     doFirst {
@@ -540,6 +541,7 @@ task "${baseName}#mixedClusterTask"(type: StandaloneRestIntegTestTask) {
 // This results in a mixed cluster with 1 node on the old version and 2 upgraded nodes.
 // This is used for rolling upgrade.
 task "${baseName}#twoThirdsUpgradedClusterTask"(type: StandaloneRestIntegTestTask) {
+    onlyIf { isSameMajorVersion }
     dependsOn "${baseName}#mixedClusterTask"
     useCluster testClusters."${baseName}0"
     doFirst {
@@ -559,6 +561,7 @@ task "${baseName}#twoThirdsUpgradedClusterTask"(type: StandaloneRestIntegTestTas
 // This results in a fully upgraded cluster.
 // This is used for rolling upgrade.
 task "${baseName}#rollingUpgradeClusterTask"(type: StandaloneRestIntegTestTask) {
+    onlyIf { isSameMajorVersion }
     dependsOn "${baseName}#twoThirdsUpgradedClusterTask"
     useCluster testClusters."${baseName}0"
     doFirst {