crypto: bump min nettle to 3.4, dropping RHEL-7 support

It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target. This lets us increment the minimum required nettle version and
drop a lot of backwards compatibility code for 2.x series of nettle.

Per repology, current shipping versions are:

             RHEL-8: 3.4.1
      Debian Buster: 3.4.1
 openSUSE Leap 15.2: 3.4.1
   Ubuntu LTS 18.04: 3.4
   Ubuntu LTS 20.04: 3.5.1
            FreeBSD: 3.7.2
          Fedora 33: 3.5.1
          Fedora 34: 3.7.2
            OpenBSD: 3.7.2
     macOS HomeBrew: 3.7.2

Ubuntu LTS 18.04 has the oldest version and so 3.4 is the new minimum.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-4-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
[thuth: rebased to use .gitlab-ci.d/buildtest.yml]
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/crypto/hash-nettle.c b/crypto/hash-nettle.c
index 2a6ee7c7d5..5c8977fb80 100644
--- a/crypto/hash-nettle.c
+++ b/crypto/hash-nettle.c
@@ -26,11 +26,7 @@
 #include <nettle/sha.h>
 #include <nettle/ripemd160.h>
 
-#if CONFIG_NETTLE_VERSION_MAJOR < 3
-typedef unsigned int     hash_length_t;
-#else
 typedef size_t       hash_length_t;
-#endif
 
 typedef void (*qcrypto_nettle_init)(void *ctx);
 typedef void (*qcrypto_nettle_write)(void *ctx,