fix(pkg/strvals): use rune literal instead of ASCII
fix(pkg/strvals): use rune literal instead of ASCII

When checking that a value begins with zero use a rune literal instead of the
ASCII code for zero.

eicnix/helm,appscode/helm,appscode/helm,adamreese/deployment-manager,SlickNik/helm,technosophos/deployment-manager,fibonacci1729/helm,thomastaylor312/helm,technosophos/k8s-helm,bacongobbler/helm,helm/helm,jascott1/helm,adamreese/deployment-manager,fibonacci1729/helm,technosophos/deployment-manager,helm/helm,jascott1/helm,SlickNik/helm,technosophos/deployment-manager,adamreese/deployment-manager,thomastaylor312/helm,technosophos/k8s-helm,adamreese/deployment-manager,michelleN/deployment-manager,bacongobbler/helm,michelleN/deployment-manager,adamreese/deployment-manager,michelleN/deployment-manager,eicnix/helm,adamreese/helm,technosophos/deployment-manager,technosophos/deployment-manager,adamreese/helm,michelleN/deployment-manager