Refactor mariadb now that rbd PVCs can be leveraged

This large commit refactors mariadb and creates a utils and
openstack chart to facilitate installing all openstack
elemenets and supporting infrastructure.

openstack/Makefile

@@ -0,0 +1,7 @@
+EXCLUDE := templates/* charts/* Chart.yaml requirement* values.yaml Makefile utils/*
+FILES := $(shell find * -type f $(foreach e,$(EXCLUDE), -not -path "$(e)") )
+
+templates/_partials.tpl: Makefile $(FILES)
+	echo Generating $(CURDIR)/$@
+	rm -f $@
+	for i in $(FILES); do  printf '{{ define "'$$i'" }}' >> $@; cat $$i >> $@; printf "{{ end }}\n" >> $@; done