No longer use networking.settings.ippool.ipip.mode, rather take from
conf.node.CALICO_IPV4POOL_IPIP (this avoids duplication and
possibility of setting them differently).
Logging values previously required Titlecase in some places, lower in
others (and it changed across versions); have the chart DTRT where it
matters to avoid configuration problems.
Change-Id: Idb7ccb5be8f9e1cb184ed86a9fd0875704912564
47a2da5af0