refactor(ecs): stop using deprecated methods and remove them

[hencrice]

The deprecated methods are: placeOnMemberOf(), placeSpreadAcross(), placePackedBy(), placeRandomly().

Closes #2946.

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Pull Request Checklist

• Testing
  • Unit test added (prefer not to modify an existing test, otherwise, it's probably a breaking change)
  • CLI change?: coordinate update of integration tests with team
  • cdk-init template change?: coordinated update of integration tests with team
• Docs
  • jsdocs: All public APIs documented
  • README: README and/or documentation topic updated
  • Design: For significant features, design document added to design folder
• Title and Description
  • Change type: title prefixed with fix, feat and module name in parens, which will appear in changelog
  • Title: use lower-case and doesn't end with a period
  • Breaking?: last paragraph: "BREAKING CHANGE: <describe what changed + link for details>"
  • Issues: Indicate issues fixed via: "Fixes #xxx" or "Closes #xxx"
• [N/A] Sensitive Modules (requires 2 PR approvers)
  • IAM Policy Document (in @aws-cdk/aws-iam)
  • EC2 Security Groups and ACLs (in @aws-cdk/aws-ec2)
  • Grant APIs (only if not based on official documentation with a reference)

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license.

[hencrice]

@rix0rrr I think master is broken(?). I ran into the following error on both master and my own fork:

lerna info run Ran npm script 'build' in '@aws-cdk/aws-iam' in 5.4s:

> @aws-cdk/[email protected] build /workplace/yenlinc/aws-cdk/packages/@aws-cdk/aws-iam
> cdk-build

lerna ERR! npm run build exited 1 in '@aws-cdk/aws-ssm'
lerna ERR! npm run build stdout:

> @aws-cdk/[email protected] build /workplace/yenlinc/aws-cdk/packages/@aws-cdk/aws-ssm
> cdk-build


lerna ERR! npm run build stderr:
Error: Error: Unable to locate module: @aws-cdk/cx-api/.jsii
    at _tryResolve (/workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/lib/project-info.js:168:15)
    at _loadDependencies (/workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/lib/project-info.js:122:21)
    at Object.loadProjectInfo (/workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/lib/project-info.js:59:32)
    at /workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/bin/jsii.js:31:46
    at Object.<anonymous> (/workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/bin/jsii.js:38:3)
    at Module._compile (internal/modules/cjs/loader.js:774:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:785:10)
    at Module.load (internal/modules/cjs/loader.js:641:32)
    at Function.Module._load (internal/modules/cjs/loader.js:556:12)
    at Module.require (internal/modules/cjs/loader.js:681:19)
Error: /workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/bin/jsii --project-references exited with error code 255
Build failed. Total time (0.7s) | /workplace/yenlinc/aws-cdk/tools/cdk-build-tools/node_modules/jsii/bin/jsii (0.4s) | cfn2ts (0.2s)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @aws-cdk/[email protected] build: `cdk-build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @aws-cdk/[email protected] build script.

[hencrice]

c5e43e2#diff-7a15a977f3f5e042a3d8db8f32830fb3 is the last working commit where ../../../scripts/buildup passed when executed from aws-cdk/packages/@aws-cdk/aws-ssm

[hencrice]

@pkandasamy91

[hencrice]

After consulting Parideep, I realized that when the CDK core is changed, running ../../../script/buildup is insufficient. Need to rebuild the core first by running ./build.sh (at the root of the repo)

[piradeepk]

LGTM! @eladb @rix0rrr please merge.