Add gating tests

Signed-off-by: Parag Nemade <pnemade@fedoraproject.org>

tests/smoke/hello.txt

@@ -0,0 +1,15 @@
+hallo
+እው ሰላም ነው
+مرحبا
+হ্যালো
+你好
+Ciao
+こんにちは
+नमस्कार
+ਸਤ ਸ੍ਰੀ ਅਕਾਲ
+Привет
+හෙලෝ
+வணக்கம்
+สวัสดี
+ہیلو
+xin chào

tests/smoke/runtest.sh

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+#!/bin/bash
+
+# If one of the commands below returns non-zero then exit immediately
+set -e
+
+echo "Testing m17n-dump tool"
+old_size=`stat -c "%s" old.png`
+echo "old_size is $old_size"
+
+m17n-dump hello.txt
+new_size=`stat -c "%s" hello.txt.png`
+echo "new_size is $new_size"
+file old.png hello.txt.png
+echo "Using font `fc-match`"
+
+if [ $old_size -ne $new_size ]; then
+        echo "m17n-dump generated different png file"
+else
+        echo "m17n-dump generated same png file"
+fi

tests/tests.yml

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+---
+- hosts: localhost
+  tags:
+  - classic
+  roles:
+  - role: standard-test-basic
+    tests:
+    - smoke
+    required_packages:
+    - m17n-lib-tools
+    - m17n-lib-devel