python-cryptography: Update to 3.0

Also:
* Remove patches that are included in the update
* Replace the python3 dependency with a smaller list (python3-urllib is
  needed because it is a dependency of python3-email)

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/python-cryptography/Makefile

@@ -8,11 +8,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=python-cryptography
-PKG_VERSION:=2.9.2
-PKG_RELEASE:=2
+PKG_VERSION:=3.0
+PKG_RELEASE:=1
 
 PYPI_NAME:=cryptography
-PKG_HASH:=a0c30272fb4ddda5f5ffc1089d7405b7a71b0b0f51993cb4e5dbb4590b2fc229
+PKG_HASH:=8e924dbc025206e97756e8903039662aa58aa9ba357d8e1d8fc29e3092322053
 
 PKG_LICENSE:=Apache-2.0 BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE.APACHE LICENSE.BSD
@@ -35,7 +35,10 @@ define Package/python3-cryptography
   URL:=https://github.com/pyca/cryptography
   DEPENDS:= \
       +libopenssl \
-      +python3 \
+      +python3-light \
+      +python3-email \
+      +python3-openssl \
+      +python3-urllib \
       +python3-cffi \
       +python3-six
 endef

lang/python/python-cryptography/patches/010-remove-npn.patch

@@ -1,41 +0,0 @@
-From eec1f066476eccf7135af0a4cfef9e1c883795b3 Mon Sep 17 00:00:00 2001
-From: Paul Kehrer <paul.l.kehrer@gmail.com>
-Date: Mon, 25 Feb 2019 10:55:16 +0800
-Subject: [PATCH] remove NPN bindings -- you should be using ALPN!
-
-pyOpenSSL consumed these, but we've marked it as deprecated and it
-already handles the case where the bindings are not available.
----
- src/_cffi_src/openssl/ssl.py | 16 ----------------
- 1 file changed, 16 deletions(-)
-
-diff --git a/src/_cffi_src/openssl/ssl.py b/src/_cffi_src/openssl/ssl.py
-index da21f3ce90..0e8610f988 100644
---- a/src/_cffi_src/openssl/ssl.py
-+++ b/src/_cffi_src/openssl/ssl.py
-@@ -431,25 +431,9 @@
- 
- long SSL_session_reused(SSL *);
- 
--void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *,
--                                           int (*)(SSL *,
--                                                   const unsigned char **,
--                                                   unsigned int *,
--                                                   void *),
--                                           void *);
--void SSL_CTX_set_next_proto_select_cb(SSL_CTX *,
--                                      int (*)(SSL *,
--                                              unsigned char **,
--                                              unsigned char *,
--                                              const unsigned char *,
--                                              unsigned int,
--                                              void *),
--                                      void *);
- int SSL_select_next_proto(unsigned char **, unsigned char *,
-                           const unsigned char *, unsigned int,
-                           const unsigned char *, unsigned int);
--void SSL_get0_next_proto_negotiated(const SSL *,
--                                    const unsigned char **, unsigned *);
- 
- int sk_SSL_CIPHER_num(Cryptography_STACK_OF_SSL_CIPHER *);
- const SSL_CIPHER *sk_SSL_CIPHER_value(Cryptography_STACK_OF_SSL_CIPHER *, int);

lang/python/python-cryptography/patches/020-disable-npn.patch

@@ -1,23 +0,0 @@
-From d7293d64d503fcbde442d69a3e11c55bf6f1374a Mon Sep 17 00:00:00 2001
-From: Paul Kehrer <paul.l.kehrer@gmail.com>
-Date: Mon, 25 Feb 2019 11:05:46 +0800
-Subject: [PATCH] set Cryptography_HAS_NEXTPROTONEG to 0 for pyOpenSSL
-
-we can remove this symbol in like...5 years.
----
- src/_cffi_src/openssl/ssl.py | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/_cffi_src/openssl/ssl.py b/src/_cffi_src/openssl/ssl.py
-index 0e8610f988..e3a7790ee1 100644
---- a/src/_cffi_src/openssl/ssl.py
-+++ b/src/_cffi_src/openssl/ssl.py
-@@ -623,7 +623,7 @@
- static const long Cryptography_HAS_SSL_OP_MSIE_SSLV2_RSA_PADDING = 1;
- static const long Cryptography_HAS_SSL_OP_NO_TICKET = 1;
- static const long Cryptography_HAS_SSL_SET_SSL_CTX = 1;
--static const long Cryptography_HAS_NEXTPROTONEG = 1;
-+static const long Cryptography_HAS_NEXTPROTONEG = 0;
- 
- /* SSL_get0_param was added in OpenSSL 1.0.2. */
- #if CRYPTOGRAPHY_OPENSSL_LESS_THAN_102 && !CRYPTOGRAPHY_LIBRESSL_27_OR_GREATER

lang/python/python-cryptography/patches/030-remove-npn.patch

@@ -1,22 +0,0 @@
-From b0b50b6bbbdf3abadc70b64c56e25b872721a7f3 Mon Sep 17 00:00:00 2001
-From: Paul Kehrer <paul.l.kehrer@gmail.com>
-Date: Mon, 25 Feb 2019 11:12:10 +0800
-Subject: [PATCH] remove another NPN related definition
-
----
- src/_cffi_src/openssl/ssl.py | 2 --
- 1 file changed, 2 deletions(-)
-
-diff --git a/src/_cffi_src/openssl/ssl.py b/src/_cffi_src/openssl/ssl.py
-index e3a7790ee1..f98f576838 100644
---- a/src/_cffi_src/openssl/ssl.py
-+++ b/src/_cffi_src/openssl/ssl.py
-@@ -139,8 +139,6 @@
- static const long TLS_ST_BEFORE;
- static const long TLS_ST_OK;
- 
--static const long OPENSSL_NPN_NEGOTIATED;
--
- typedef ... SSL_METHOD;
- typedef ... SSL_CTX;
-