Add missing Makefile

Makefile

+DESTDIR=/
+SALTENVDIR=/usr/share/salt-formulas/env
+RECLASSDIR=/usr/share/salt-formulas/reclass
+FORMULANAME=$(shell grep name: metadata.yml|head -1|cut -d : -f 2|grep -Eo '[a-z0-9\-]*')
+
+all:
+	@echo "make install - Install into DESTDIR"
+	@echo "make test    - Run tests"
+	@echo "make clean   - Cleanup after tests run"
+
+install:
+	# Formula
+	[ -d $(DESTDIR)/$(SALTENVDIR) ] || mkdir -p $(DESTDIR)/$(SALTENVDIR)
+	cp -a $(FORMULANAME) $(DESTDIR)/$(SALTENVDIR)/
+	[ ! -d _modules ] || cp -a _modules $(DESTDIR)/$(SALTENVDIR)/
+	[ ! -d _states ] || cp -a _states $(DESTDIR)/$(SALTENVDIR)/ || true
+	# Metadata
+	[ -d $(DESTDIR)/$(RECLASSDIR)/service/$(FORMULANAME) ] || mkdir -p $(DESTDIR)/$(RECLASSDIR)/service/$(FORMULANAME)
+	cp -a metadata/service/* $(DESTDIR)/$(RECLASSDIR)/service/$(FORMULANAME)
+
+test:
+	[ ! -d tests ] || (cd tests; ./run_tests.sh)
+
+clean:
+	[ ! -d tests/build ] || rm -rf tests/build
+	[ ! -d build ] || rm -rf build