@Property doesn't work per method in Kotlintest

[alvarosanchez]

This was discovered while fixing #91.

Given this test:

@MicronautTest
@Property(name = "foo.bar", value = "stuff")
class PropertyValueTest(@Property(name = "foo.bar") val value: String): AnnotationSpec() {

    @Test
    fun testInitialValue() {
        value shouldBe "stuff"
    }

    @Property(name = "foo.bar", value = "changed")
    @Test
    fun testValueChanged() {
        value shouldBe "changed"
    }

    @Test
    fun testValueRestored() {
        value shouldBe "stuff"
    }
}

testValueChanged() fails with:

org.opentest4j.AssertionFailedError: expected: "changed" but was: "stuff"
Expected :"changed"
Actual   :"stuff"