Improve a bit ability to run testsuite from mockbuild

Intended to be run like:
centpkg mockbuild --with SYSTEMTEST -N --enable-network

Do fail when it does not pass. But allow running tests as root.

Related: RHEL-77103

bind9.16.spec

@@ -6,6 +6,8 @@
 # bcond_without is built by default, unless --without X is passed
 # bcond_with is built only when --with X is passed to build
 %bcond_with    SYSTEMTEST
+# enable RSA1 during SYSTEMTEST
+%bcond_with    CRYPTO_POLICY_RSA1
 %bcond_without GSSTSIG
 # it is not possible to build the package without PKCS11 sub-package
 # due to extensive changes to Makefiles
@@ -211,6 +213,7 @@ BuildRequires:  softhsm
 %if %{with SYSTEMTEST}
 # bin/tests/system dependencies
 BuildRequires:  perl(Net::DNS) perl(Net::DNS::Nameserver) perl(Time::HiRes) perl(Getopt::Long)
+BuildRequires:  perl(English)
 BuildRequires:  python-dns
 # manual configuration requires this tool
 BuildRequires:  iproute
@@ -522,6 +525,10 @@ done
 %endif
 
 sed -e 's|"$TOP/config.guess"|"$TOP_SRCDIR/config.guess"|' -i bin/tests/system/ifconfig.sh
+# allow running as root from mock or test machines
+sed -e 's, "enable-developer",& \&\& systemctl is-system-running \&>/dev/null \&\& ! [ -e /mnt/tests ],' \
+    -i bin/tests/system/run.sh
+
 :;
 
 
@@ -696,15 +703,29 @@ else
   sh bin/tests/system/ifconfig.sh up
   perl bin/tests/system/testsock.pl && CONFIGURED=build
 fi
+
 if [ -n "$CONFIGURED" ]
 then
   set -e
+  %if %{with CRYPTO_POLICY_RSA1}
+    # Override crypto-policy to allow RSASHA1 key operations
+    OPENSSL_CONF="$(mktemp openssl-XXXXXX.cnf)"
+    cat > "$OPENSSL_CONF" << 'EOF'
+.include = /etc/ssl/openssl.cnf
+[evp_properties]
+rh-allow-sha1-signatures = yes
+EOF
+    export OPENSSL_CONF
+  %endif
   pushd build/bin/tests
   chown -R ${USER} . # Can be unknown user
-  %make_build test 2>&1 | tee test.log
+  %make_build test
   e=$?
   popd
   [ "$CONFIGURED" = build ] && sh bin/tests/system/ifconfig.sh down
+  %if %{with CRYPTO_POLICY_RSA1}
+    export -b OPENSSL_CONF
+  %endif
   if [ "$e" -ne 0 ]; then
     echo "ERROR: this build of BIND failed 'make test'. Aborting."
     exit $e;