Use primary DNS hostname for testing IPA deployment.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

tests/sanity/runtest.sh

@@ -1,7 +1,16 @@
 #!/bin/sh -eux
 
+dnshost="$(hostname)"
+if command -v dig >/dev/null
+then
+    hostip="$(dig +short $(hostname))"
+    if [ -n "${hostip}" ]
+    then
+        dnshost="$(dig +short -x "${hostip}" | sed "s/\(.*\)\./\1/")"
+    fi 
+fi
 systemctl unmask gssproxy
-ipa-server-install --hostname=$(hostname) --no-host-dns -r EXAMPLE.TEST -n example.test --setup-dns --no-forwarders --allow-zone-overlap -p Secret123 -a Secret123 -U
+ipa-server-install --hostname=${dnshost} -r EXAMPLE.TEST -n example.test --setup-dns --no-forwarders --allow-zone-overlap -p Secret123 -a Secret123 -U
 echo Secret123 | kinit admin
 ipa config-show
 ipa-server-install --uninstall -U