Multiple Shader and missing directive errors occur on launching lightweight template as render-pipelines.lightweight and shadergraph package is not updated

Steps to Repo:
1. Launch unity with the lightweight template
2. Observe there are multiple shader and missing directive errors
3. Go to file > player settings > other settings
4. checkmark allow unsafe code property
5. Window > package manager
6. Update lightweight template
7. Observe console for multiple shader errors
8. Restart the editor or clear errors
9. observe that the shader errors are disappeared and new errors appear
9. Update the shader graph package

Expected Result:
1. The lightweight template should launch without any errors
2. Proper warnings and messages should be given to the user
3. The template should be ready to use

Occurring with:
2018.2.0a8, 2018.2.0a3

Working with:
2018.1.0b13, 2018.1.0b5

Note that templates are available 2018.1.0b5 and 2018.2.0a3 onwards

Environment:
Windows 10, Mac 10.13