LOOKDEVX-406 : Version logic fixes and std surface default value version update

Update #1060

Update standard surface default values:

Base value change: From 0.8 to 1.0
Base color change: From 1.1,1 to 0.8, 0.8, 0.8
We keep the version at 1.0.1 instead of bumping to a new version to avoid undue implementation duplication.

Fixes:

Fix node/nodedef matching when a version is specified to use full string value vs just integrations. This appears to be a regression.
Fix nodedef/nodegraph implementation matching to exclude checking version strings as nodegraphs should not have such. This was causing the incorrect version to be chosen (the default one) even when an explicit version was specified. Added a new validation check for this and fixed up some previous nodegraph implementations.
Remove runtime "version" setting on nodegraphs for Runtime nodedef creation, and remove "version" check for nodedef/nodegraph implementation search.
Add in automatic "version" string removal from nodegraphs if found as part of upgrade path).
Update version testing.

autodesk-forks / MaterialX