[PATCH 06/12] crypto: bump min gnutls to 3.5.8, dropping RHEL-7 support

["Daniel P. Berrangé" <berrange@redhat.com>]

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 gnutls version

Per repology, current shipping versions are:

             RHEL-8: 3.6.14
     Debian Stretch: 3.5.8
      Debian Buster: 3.6.7
 openSUSE Leap 15.2: 3.6.7
   Ubuntu LTS 18.04: 3.5.18
   Ubuntu LTS 20.04: 3.6.13
            FreeBSD: 3.6.15
          Fedora 33: 3.6.16
          Fedora 34: 3.7.1
            OpenBSD: 3.6.15
     macOS HomeBrew: 3.6.15

Debian Stretch has the oldest version and so 1.7.6 is the new minimum.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 .gitlab-ci.yml | 15 ---------------
 configure      |  2 +-
 2 files changed, 1 insertion(+), 16 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0fefda2674..c5b8ea0d94 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -712,21 +712,6 @@ build-coroutine-sigaltstack:
                     --enable-trace-backends=ftrace
     MAKE_CHECK_ARGS: check-unit
 
-# Most jobs test latest gcrypt or nettle builds
-#
-# These jobs test old gcrypt and nettle from RHEL7
-# which had some API differences.
-crypto-only-gnutls:
-  <<: *native_build_job_definition
-  needs:
-    job: amd64-centos7-container
-  variables:
-    IMAGE: centos7
-    TARGETS: x86_64-softmmu x86_64-linux-user
-    CONFIGURE_ARGS: --disable-nettle --disable-gcrypt --enable-gnutls
-    MAKE_CHECK_ARGS: check
-
-
 # Check our reduced build configurations
 build-without-default-devices:
   <<: *native_build_job_definition
diff --git a/configure b/configure
index d5569f9252..69631fad3b 100755
--- a/configure
+++ b/configure
@@ -2790,7 +2790,7 @@ fi
 
 if test "$gnutls" != "no"; then
     pass="no"
-    if $pkg_config --exists "gnutls >= 3.1.18"; then
+    if $pkg_config --exists "gnutls >= 3.5.8"; then
         gnutls_cflags=$($pkg_config --cflags gnutls)
         gnutls_libs=$($pkg_config --libs gnutls)
         # Packaging for the static libraries is not always correct.
-- 
2.31.1