unbound: upgrade to 1.22.0

there is issue with DNS unable to resolve some domain [0], update the
unbound to 1.22.0, the issue is resolved, not sure why it broke though.

[0]: https://github.com/vincentmli/bpfire/issues/112

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>

lfs/unbound

@@ -24,7 +24,7 @@
 
 include Config
 
-VER        = 1.19.1
+VER        = 1.22.0
 
 THISAPP    = unbound-$(VER)
 DL_FILE    = $(THISAPP).tar.gz
@@ -40,7 +40,7 @@ objects = $(DL_FILE)
 
 $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
 
-$(DL_FILE)_BLAKE2 = a48c5b9493eb0a9aa2171956e08677e1cfb7c49b53731c1b05f9192434c4d815eba972aab110ba0ee25fee1e7a57192c8b48e59bb21fb76ad7fd1c7d2d260012
+$(DL_FILE)_BLAKE2 = 28cf5c6c5e29d4026beb33e8a17b012d1185a3a100fafd3e2717233f47c7b0ad2bf7b7fc2d5ad8c15b6fef496ed9d9c95d116535c3c34c945b27c2a42fa197ff
 
 install : $(TARGET)
 
@@ -81,6 +81,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 			--enable-event-api \
 			--enable-tfo-client \
 			--enable-tfo-server \
+			--with-libevent=no \
 			ac_cv_func_getentropy=no
 
 	cd $(DIR_APP) && make $(MAKETUNING)
@@ -99,6 +100,8 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	# Install DHCP leases bridge
 	install -v -m 755 $(DIR_SRC)/config/unbound/unbound-dhcp-leases-bridge \
 		/usr/sbin/unbound-dhcp-leases-bridge
+	install -v -m 755 $(DIR_SRC)/config/unbound/unbound-dhcp-leases-client \
+		/usr/sbin/unbound-dhcp-leases-client
 
 	# Install key
 	-mkdir -pv /var/lib/unbound