Added diskdrive collector

To retrieve data from Win32_DiskDrive Object

Signed-off-by: sixfears7 <57415489+6fears7@users.noreply.github.com>
Signed-off-by: pgibbs1 <pgibbs1@liberty.edu>

diskdrive_test.go

@@ -0,0 +1,17 @@
+package collector
+
+import (
+	"testing"
+)
+
+func BenchmarkDiskDriveCollector(b *testing.B) {
+	benchmarkCollector(b, "disk_drive", newDiskDriveInfoCollector)
+}
+
+// goos: windows
+// goarch: amd64
+// pkg: github.com/prometheus-community/windows_exporter/collector
+// cpu: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
+// BenchmarkDiskDriveCollector-8   	       1	1334272800 ns/op	41182008 B/op	  125688 allocs/op
+// PASS
+// ok  	github.com/prometheus-community/windows_exporter/collector	4.943s