Log test version loaded from environment

src/jat.sh.skel

 #
 JAT__TESTID=${JAT__TESTID:-_jat_anon_test_}
 
+#
+# Test version
+#
+JAT__TEST_VERSION=${JAT__TEST_VERSION:-_jat_no_test_version_}
+
 #
 # Path to main logfile
 #
             echo "jat_version: $__JAT__SELF_VERSION"
             echo "test:"
             echo "    id: $JAT__TESTID"
+            echo "    version: $JAT__TEST_VERSION"
             echo "start: $(__jat__newstamp)"
             echo "events:"
         } | __jat__writelog

tests/basic/oracle/ylog_both.stdout

 jat_version: JAT_VERSION
 test:
     id: _jat_anon_test_
+    version: _jat_no_test_version_
 start: time-1
 events:
     -

tests/basic/oracle/ylog_fail.stdout

 jat_version: JAT_VERSION
 test:
     id: _jat_anon_test_
+    version: _jat_no_test_version_
 start: time-1
 events:
     -

tests/basic/oracle/ylog_pass.stdout

 jat_version: JAT_VERSION
 test:
     id: _jat_anon_test_
+    version: _jat_no_test_version_
 start: time-1
 events:
     -