add gpg fingerprint for experimental

Signed-off-by: Jessica Frazelle <princess@docker.com>
(cherry picked from commit 957622d452983f14bcc79443c9ff05780e1fd6bf)
diff --git a/hack/install.sh b/hack/install.sh
index d8c25d3..4beb71e 100755
--- a/hack/install.sh
+++ b/hack/install.sh
@@ -207,6 +207,8 @@
 					$sh_c "apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9"
 				elif [ "https://test.docker.com/" = "$url" ]; then
 					$sh_c "apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 740B314AE3941731B942C66ADF4FD13717AAD7D6"
+				elif [ "https://experimental.docker.com/" = "$url" ]; then
+					$sh_c "apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys E33FF7BF5C91D50A6F91FFFD4CC38D40F9A96B49"
 				else
 					$sh_c "$curl ${url}gpg | apt-key add -"
 				fi
diff --git a/hack/release.sh b/hack/release.sh
index b9cfe94..5ea4f12 100755
--- a/hack/release.sh
+++ b/hack/release.sh
@@ -284,6 +284,8 @@
 	local gpgFingerprint=36A1D7869245C8950F966E92D8576A8BA88D21E9
 	if [[ $BUCKET == test* ]]; then
 		gpgFingerprint=740B314AE3941731B942C66ADF4FD13717AAD7D6
+	elif [[ $BUCKET == experimental* ]]; then
+		gpgFingerprint=E33FF7BF5C91D50A6F91FFFD4CC38D40F9A96B49
 	fi
 
 	# Upload repo