add keyword 'other' vim syntax support, plus language parsing tests

Signed-off-by: Steve Beattie <steve@nxnw.org>
Acked-by: John Johansen <john.johansen@canonical.com>

parser/tst/simple_tests/file/allow/ok_other_1.sd

@@ -0,0 +1,7 @@
+#
+#=DESCRIPTION simple allow other flag test
+#=EXRESULT PASS
+
+profile test {
+  allow other /tmp/** rw,
+}

parser/tst/simple_tests/file/allow/ok_other_2.sd

@@ -0,0 +1,7 @@
+#
+#=DESCRIPTION simple audit allow other flag test
+#=EXRESULT PASS
+
+profile test {
+  audit allow other /tmp/** rw,
+}

parser/tst/simple_tests/file/ok_other_2.sd

@@ -0,0 +1,7 @@
+#
+#=DESCRIPTION simple deny other flag test
+#=EXRESULT PASS
+
+profile test {
+  deny other /tmp/** rw,
+}

parser/tst/simple_tests/file/ok_other_3.sd

@@ -0,0 +1,7 @@
+#
+#=DESCRIPTION simple other flag test
+#=EXRESULT PASS
+
+profile test {
+  audit other /tmp/** rw,
+}