Use cached value for `JdkJvmPath` to keep `ResolveSdks` task fast as it is used on every build. Context: https://github.com/xamarin/xamarin-android/pull/2153#pullrequestreview-167901568
Use cached value for
JdkJvmPathto keepResolveSdkstask fast as it is used on every build.Context: #2153 (review)