Revert "The earlier commit ea119211b2 removed 'dsa' as one of the ssh_host_*_key"

The author (@pprindeville) of the original commit noted that the wrong
commit was picked, see
https://github.com/openwrt/packages/commit/325b7d2cd2d6e9d4903c6e7628c7c9ae0ddab564#commitcomment-22387528
"Err... looks like the wrong fix got committed. I was hoping that this
commit d902e5d would have gone in instead."

This reverts commit 325b7d2cd2.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

net/openssh/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=openssh
 PKG_VERSION:=7.5p1
-PKG_RELEASE:=2
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/ \

net/openssh/patches/900-remove-dsa-key-file-patch.patch

@@ -1,13 +0,0 @@
---- a/servconf.c	2017-03-19 20:39:27.000000000 -0600
-+++ b/servconf.c	2017-06-01 19:12:51.338645002 -0600
-@@ -201,8 +201,10 @@
- 		/* fill default hostkeys for protocols */
- 		options->host_key_files[options->num_host_key_files++] =
- 		    _PATH_HOST_RSA_KEY_FILE;
-+#if 0
- 		options->host_key_files[options->num_host_key_files++] =
- 		    _PATH_HOST_DSA_KEY_FILE;
-+#endif
- #ifdef OPENSSL_HAS_ECC
- 		options->host_key_files[options->num_host_key_files++] =
- 		    _PATH_HOST_ECDSA_KEY_FILE;