build: suppress bazel schematic tsconfig warnings (#12957)
build: suppress bazel schematic tsconfig warnings (#12957)

* Since the schematics are also built through Gulp, we need to specify the `exclude` option in the `tsconfig`. Bazel warns because those options will be ignored. Similarly to all other tsconfig files, we should suppress the warnings.
jelbourn/material2,DevVersion/material2,mmalerba/material2,angular/components,andrewseguin/material2,jelbourn/material2,DevVersion/material2,mmalerba/material2,crisbeto/material2,andrewseguin/material2,crisbeto/material2,andrewseguin/material2,Jefiozie/material2,jelbourn/material2,angular/components,angular/components,josephperrott/material2,Jefiozie/material2,DevVersion/material2,andrewseguin/material2,DevVersion/material2,crisbeto/material2,josephperrott/material2,jelbourn/material2,Jefiozie/material2,josephperrott/material2,DevVersion/material2,jelbourn/material2,mmalerba/material2,mmalerba/material2,josephperrott/material2,angular/components,josephperrott/material2,mmalerba/material2,Jefiozie/material2,Jefiozie/material2,crisbeto/material2,andrewseguin/material2