[Partial fix for #1372]Added SimpleTypesExcludeFilter to exlcude validat...

...ion on simple types and also added tests to cover scenarios.

@yishaigalatzer @pranavkm @rynowak @harshgMSFT 

Note:
- This PR does not have comments. I will add them once we agree upon the changes.
Actual input string has 'project.' prefix. I need this here. Otherwise, it won't be ab le to parse the input string.  For example, "{\"project.Suppliers\":{\"Value\":null,\".....