Skip the ssl tests on Brew s390x build environment.

Fix FTBFS due to SSL tests on s390x. The s390x builders in Brew have
unexpected configuration of DNS, which make the tests fail.

Related: rhbz#1938942

ruby-3.0.0-Skip-ssl-tests-for-offline.patch

@@ -0,0 +1,16 @@
+diff --git a/test/rubygems/test_bundled_ca.rb b/test/rubygems/test_bundled_ca.rb
+index 6973758c4c..71f61ca8f7 100644
+--- a/test/rubygems/test_bundled_ca.rb
++++ b/test/rubygems/test_bundled_ca.rb
+@@ -32,7 +32,7 @@ def assert_https(host)
+     http.verify_mode = OpenSSL::SSL::VERIFY_PEER
+     http.cert_store = bundled_certificate_store
+     http.get('/')
+-  rescue Errno::ENOENT, Errno::ETIMEDOUT, SocketError
++  rescue Errno::ECONNREFUSED, Errno::ENETUNREACH, Errno::ENOENT, Errno::ETIMEDOUT, SocketError
+     skip "#{host} seems offline, I can't tell whether ssl would work."
+   rescue OpenSSL::SSL::SSLError => e
+     # Only fail for certificate verification errors
+-- 
+2.29.2
+

ruby.spec

@@ -153,6 +153,10 @@ Patch15: ruby-dwarf5-avoid_crash-r1.patch
 # Avoid possible timeout errors in TestBugReporter#test_bug_reporter_add.
 # https://bugs.ruby-lang.org/issues/16492
 Patch19: ruby-2.7.1-Timeout-the-test_bug_reporter_add-witout-raising-err.patch
+# Skip the ssl tests on Brew s390x build environment.
+# https://projects.engineering.redhat.com/browse/RHELBLD-6305
+# https://github.com/ruby/ruby/pull/4112
+Patch100: ruby-3.0.0-Skip-ssl-tests-for-offline.patch
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 Suggests: rubypick
@@ -589,6 +593,9 @@ rm -rf ext/fiddle/libffi*
 %patch9 -p1
 %patch15 -p1
 %patch19 -p1
+%ifarch s390x
+%patch100 -p1
+%endif
 
 # Provide an example of usage of the tapset:
 cp -a %{SOURCE3} .
@@ -1360,6 +1367,7 @@ MSPECOPTS=""
   * Drop Net::Telnet and XMLRPC packages, because they were dropped from Ruby.
   Resolves: rhbz#1938942
 - Fix FTBFS due to an incompatible load directive.
+- Skip the SSL tests on Brew s390x build environment.
 
 * Wed Apr 07 2021 Pavel Valena <pvalena@redhat.com> - 2.7.3-136
 - Upgrade to Ruby 2.7.3.