To Do - Update ProductName to SMProductName.

:ProductName: does not exist in the OpenShift `common-attributes.adoc` file but might be used by another aligned product.

“The {product-title} attribute provides the context-sensitive name of the relevant OpenShift distribution, for example, "OpenShift Container Platform" or "OKD". The {product-version} attribute provides the product version relative to the distribution, for example "4.9".

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When I first set up the Service Mesh variables, I set the product name variable to Service Mesh.  This came up in a recent comment thread on a Serverless PR.

https://github.com/openshift/openshift-docs/pull/27660#discussion_r563776971

I know that this is outside the scope of this PR, but I'm slightly concerned at the use of {ProductName}, which in the core OCP docs normally translates to an OpenShift distro, not Service Mesh.

@JStickler could you raise this with your team please? We use {ServerlessProductName} so maybe ya'll could update this to something similar for your product?

We should probably change {ProductName} from representing OSSM or Jaeger to representing OpenShift. 

This would require replacing variables in the OSSM and Jaeger assemblies and modules to replace {ProductName} with {SMProductName} or {JaegerProductName}.  And a similar effort for version numbers.