Temporarily disable a couple of failing upgrade example e2e tests
to unblock the 4.4.x branch while investigating and fixing the
issues.
It seems to be some typings-related issues that TypeScript 2.5.3
complains about.
(Note: The same tests are temporarily disabled on master too.)
PR Close#19600
The tooling for boilerplate was also running `yarn install` on the examples'
shared folder. But since this is handled by `ng-packages-installer` this
commit refactors the tools so that the boilerplate no longer does this
anymore.
PR Close#19600
This commit also updates the version of `@angular/cli` used for docs examples.
The previous (transient) dependency `@ngtools/webpack` was not compatible with
`@angular/compiler-cli@>=5` and was breaking when running against the local
builds (currently at 5.0.0-beta.2). The version of `@ngtools/webpack` used by
the latest `@angular/cli` version is compatible with `@angular/compiler-cli@5`.
