Implement CI with TMT

.fmf/version

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+1

plans/test.fmf

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+summary: Basic smoke test
+discover:
+    how: fmf
+execute:
+    how: tmt

tests/validation/main.fmf

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+summary: Lint check for annotation files
+test: ./test.sh
+framework: beakerlib
+require:
+    - cldr-emoji-annotation
+    - libxml2

tests/validation/test.sh

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+#!/bin/bash
+# vim: dict+=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+FAILED=0
+for dir in annotations annotationsDerived; do
+    for xml in /usr/share/unicode/cldr/common/$dir/*.xml; do
+        echo xmllint --noout --valid --postvalid $xml
+        xmllint --noout --valid --postvalid $xml
+        if test $? -ne 0 ; then
+            FAILED=1
+            break
+        fi
+    done
+    if test $FAILED -ne 0 ; then
+        break
+    fi
+done
+
+rlJournalStart
+    rlPhaseStartTest
+        rlAssertEquals "lint result" $FAILED 0
+    rlPhaseEnd
+rlJournalEnd