SpEL expression issue- Must be of type string- "integer"

Issue

Error noticed: spec.endpoints.metricRelabelings.replacement in body must be of type string: "integer"This error indicates that replacement expects a string instead of an integer.  In the CRD some values may contain Regex expressions like ${}.  These characters in Spinnaker are used to evaluate SPEL expressions.  There is a way to escape these characters but doesn't work for numbers at this time.

Cause

Spinnaker is evaluating the expression and returning an integer causing the error.