devapp/owners: add x1ddos and brad to crypto/acme

Filippo suggested I add myself (x1ddos) in
golang/go#21081 (comment)

Brad for crypto/acme/autocert.

Change-Id: Ia14a3da50d20e15ff086c05b2a81ee81b149603f
Reviewed-on: https://go-review.googlesource.com/c/build/+/189398
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

devapp/owners/table.go

@@ -67,6 +67,7 @@ var (
 	tklauser     = gh("tklauser")
 	tombergan    = gh("tombergan")
 	ysmolsky     = gh("ysmolsky")
+	x1ddos       = gh("x1ddos")
 )
 
 // entries is a map of <repo name>/<path> to Owner entries.
@@ -88,6 +89,13 @@ var entries = map[string]*Entry{
 		Primary:   []Owner{filippo},
 		Secondary: []Owner{agl},
 	},
+	"crypto/acme": {
+		Primary: []Owner{filippo, x1ddos},
+	},
+	"crypto/acme/autocert": {
+		Primary:   []Owner{bradfitz, x1ddos},
+		Secondary: []Owner{filippo},
+	},
 	"crypto/ssh": {
 		Primary:   []Owner{hanwen},
 		Secondary: []Owner{filippo},