Use camelCase for cacheKind control property

Because it is more intuitive for end-users.

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/NativePlatformLibsIT.kt

@@ -143,8 +143,9 @@ class NativePlatformLibsIT : BaseGradleIT() {
         deleteInstalledCompilers()
 
         fun buildPlatformLibrariesWithoutAndWithCaches(target: KonanTarget) {
-            with(platformLibrariesProject(target.presetName)) {
-                val targetName = target.name
+            val presetName = target.presetName
+            val targetName = target.name
+            with(platformLibrariesProject(presetName)) {
                 // Build libraries without caches.
                 buildWithLightDist("tasks") {
                     assertSuccessful()
@@ -152,7 +153,7 @@ class NativePlatformLibsIT : BaseGradleIT() {
                 }
 
                 // Change cache kind and check that platform libraries generator was executed.
-                buildWithLightDist("tasks", "-Pkotlin.native.cacheKind.$targetName=static") {
+                buildWithLightDist("tasks", "-Pkotlin.native.cacheKind.$presetName=static") {
                     assertSuccessful()
                     assertContains("Precompile platform libraries for $targetName (precompilation: static)")
                 }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-cocoapods-multiple/kotlin-library/gradle.properties

@@ -1 +1 @@
-kotlin.native.cacheKind.ios_x64=none
+kotlin.native.cacheKind.iosX64=none

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-cocoapods-multiple/second-library/gradle.properties

@@ -1 +1 @@
-kotlin.native.cacheKind.ios_x64=none
+kotlin.native.cacheKind.iosX64=none

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinProperties.kt

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.gradle.tasks.Kotlin2JsCompile
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlin.gradle.utils.SingleWarningPerBuild
 import org.jetbrains.kotlin.konan.target.KonanTarget
+import org.jetbrains.kotlin.konan.target.presetName
 import org.jetbrains.kotlin.statistics.metrics.StringMetrics
 import java.io.File
 import java.util.*
@@ -205,7 +206,7 @@ internal class PropertiesProvider private constructor(private val project: Proje
      * Dependencies caching strategy for [target].
      */
     fun nativeCacheKindForTarget(target: KonanTarget): NativeCacheKind? =
-        property("kotlin.native.cacheKind.${target.name}")?.let { NativeCacheKind.byCompilerArgument(it) }
+        property("kotlin.native.cacheKind.${target.presetName}")?.let { NativeCacheKind.byCompilerArgument(it) }
 
     /**
      * Ignore overflow in [org.jetbrains.kotlin.gradle.internal.testing.TCServiceMessageOutputStreamHandler]