build: update to Angular 9.0.0-rc.11 and CLI 9.0.0-rc.10

[Splaktar]

This currently results in the following build error:

ERROR in ./node_modules/@angular/components-examples/fesm2015/material/form-field.js 369:8-23
"export 'ɵɵallocHostVars' was not found in '@angular/core'

A prod build gives a bit more detail:

ERROR in ./node_modules/@angular/components-examples/fesm2015/material/form-field.js 324:16-31
"export 'ɵɵallocHostVars' was not found in '@angular/core'
    at HarmonyImportSpecifierDependency._getErrors (/Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/dependencies/HarmonyImportSpecifierDependency.js:109:11)
    at HarmonyImportSpecifierDependency.getErrors (/Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/dependencies/HarmonyImportSpecifierDependency.js:68:16)
    at Compilation.reportDependencyErrorsAndWarnings (/Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compilation.js:1463:22)
    at /Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compilation.js:1258:10
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/splaktar/Git/angular/material.angular.io/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:42:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/splaktar/Git/angular/material.angular.io/node_modules/tapable/lib/Hook.js:154:20)
    at Compilation.finish (/Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compilation.js:1253:28)
    at /Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compiler.js:672:17
    at _done (eval at create (/Users/splaktar/Git/angular/material.angular.io/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:9:1)
    at eval (eval at create (/Users/splaktar/Git/angular/material.angular.io/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:36:22)
    at /Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compilation.js:1185:12
    at /Users/splaktar/Git/angular/material.angular.io/node_modules/webpack/lib/Compilation.js:1097:9
    at processTicksAndRejections (internal/process/task_queues.js:76:11)
 @ ./node_modules/@angular/components-examples/fesm2015/components-examples.js
 @ ./src/app/pages/component-sidenav/component-sidenav.ts
 @ ./src/app/routes.ts
 @ ./src/app/app-module.ts
 @ ./src/main.ts
 @ multi ./src/main.ts
error Command failed with exit code 1.

[Splaktar]

https://github.com/angular/components/blob/b56bcadaeaf2420c7a0e3dac429f47e67a058bee/src/components-examples/material/form-field/form-field-custom-control/form-field-custom-control-example.ts#L27-L31 seems to be the culprit

[Splaktar]

Possibly related to PR angular/components#18283 not getting cherry picked into the 9.0.x branch.

[Splaktar]

I can't find any breaking change docs or notes about changes to https://next.angular.io/api/core/Directive#host relative to version 9 or rc.11.

This same example seems to build with Angular 9.0.0-rc.11 in the dev-app using Ivy.

[Splaktar]

Fixed issues via updating to latest docs-content that includes PR angular/components#18300 which trigged this commit.

[jelbourn]

LGTM