Detect forked pull request on AppVeyor CI

[bahmutov]

We have special logic to detect forked pull requests on CircleCI and run tests without recording even when the CI file says cypress run --record. (we do show a warning in the terminal)

I have noticed that we don't detect this situation on AppVeyor, see https://ci.appveyor.com/project/cypress-io/cypress-example-kitchensink/builds/24174895 for example

run-if npm run test:ci:record
Platform win32 is allowed
Arch ia32 is allowed
> cypress-example-kitchensink@0.0.0-development test:ci:record C:\projects\cypress-example-kitchensink
> run-p --race start:ci e2e:record
> cypress-example-kitchensink@0.0.0-development start:ci C:\projects\cypress-example-kitchensink
> http-server app -c-1 --silent
> cypress-example-kitchensink@0.0.0-development e2e:record C:\projects\cypress-example-kitchensink
> cypress run --record
You passed the --record flag but did not provide us your Record Key.
You can pass us your Record Key like this:
  cypress run --record --key <record_key>
You can also set the key as an environment variable with the name CYPRESS_RECORD_KEY.
https://on.cypress.io/how-do-i-record-runs
npm ERR! code ELIFECYCLE
npm ERR! errno 1

Environment variables to use to detect this situation

print-env APPVEYOR
APPVEYOR=True
APPVEYOR_ACCOUNT_NAME=cypress-io
APPVEYOR_API_URL=http://localhost:1031/
APPVEYOR_BUILD_AGENT_HYPERV_NIC_CONFIGURED=true
APPVEYOR_BUILD_FOLDER=C:\projects\cypress-example-kitchensink
APPVEYOR_BUILD_ID=24174895
APPVEYOR_BUILD_NUMBER=1125
APPVEYOR_BUILD_VERSION=1.0.1125
APPVEYOR_BUILD_WORKER_IMAGE=Visual Studio 2015
APPVEYOR_JOB_ID=vq2vocqjxhwwik0r
APPVEYOR_JOB_NUMBER=1
APPVEYOR_PROJECT_ID=369103
APPVEYOR_PROJECT_NAME=cypress-example-kitchensink
APPVEYOR_PROJECT_SLUG=cypress-example-kitchensink
APPVEYOR_PULL_REQUEST_HEAD_COMMIT=0f79966c703a3864cb74a993a4e25ded91fbed61
APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH=patch-2
APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME=mguery/cypress-example-kitchensink
APPVEYOR_PULL_REQUEST_NUMBER=241
APPVEYOR_PULL_REQUEST_TITLE=Update index.html
APPVEYOR_REPO_BRANCH=master
APPVEYOR_REPO_COMMIT=1fed0b1223afaa50c5df2a4586e1c9e67dcca90b
APPVEYOR_REPO_COMMIT_AUTHOR=Marjy Guery
APPVEYOR_REPO_COMMIT_AUTHOR_EMAIL=marjy@cypress.io
APPVEYOR_REPO_COMMIT_MESSAGE=Update index.html
APPVEYOR_REPO_COMMIT_TIMESTAMP=2019-04-29T13:21:01.0000000Z
APPVEYOR_REPO_NAME=cypress-io/cypress-example-kitchensink
APPVEYOR_REPO_PROVIDER=gitHub
APPVEYOR_REPO_SCM=git
APPVEYOR_REPO_TAG=false
APPVEYOR_URL=https://ci.appveyor.com
commit-message-install --else "npm ci"

[bahmutov]

for comparison, internal pull request here https://ci.appveyor.com/project/cypress-io/cypress-example-kitchensink/builds/24164123 with the following env variables

APPVEYOR=True
APPVEYOR_ACCOUNT_NAME=cypress-io
APPVEYOR_API_URL=http://localhost:1031/
APPVEYOR_BUILD_AGENT_HYPERV_NIC_CONFIGURED=true
APPVEYOR_BUILD_FOLDER=C:\projects\cypress-example-kitchensink
APPVEYOR_BUILD_ID=24164123
APPVEYOR_BUILD_NUMBER=1123
APPVEYOR_BUILD_VERSION=1.0.1123
APPVEYOR_BUILD_WORKER_IMAGE=Visual Studio 2015
APPVEYOR_JOB_ID=8g5140lxdy6grrc0
APPVEYOR_JOB_NUMBER=1
APPVEYOR_PROJECT_ID=369103
APPVEYOR_PROJECT_NAME=cypress-example-kitchensink
APPVEYOR_PROJECT_SLUG=cypress-example-kitchensink
APPVEYOR_PULL_REQUEST_HEAD_COMMIT=33c8ec36ba97f1eaa3148515e5f6f3028fbb611d
APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH=renovate/lock-file-maintenance
APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME=cypress-io/cypress-example-kitchensink
APPVEYOR_PULL_REQUEST_NUMBER=234
APPVEYOR_PULL_REQUEST_TITLE=chore(deps): update dependency to version ??
APPVEYOR_REPO_BRANCH=master
APPVEYOR_REPO_COMMIT=cde7daf8edb42b10562df3d7ba5d78e07876ff47
APPVEYOR_REPO_COMMIT_AUTHOR=Renovate Bot
APPVEYOR_REPO_COMMIT_AUTHOR_EMAIL=bot@renovateapp.com
APPVEYOR_REPO_COMMIT_MESSAGE=chore(deps): update to ??
APPVEYOR_REPO_COMMIT_TIMESTAMP=2019-04-29T04:09:39.0000000Z
APPVEYOR_REPO_NAME=cypress-io/cypress-example-kitchensink
APPVEYOR_REPO_PROVIDER=gitHub
APPVEYOR_REPO_SCM=git
APPVEYOR_REPO_TAG=false
APPVEYOR_URL=https://ci.appveyor.com
commit-message-install --else "npm ci"

[bahmutov]

we can check values of APPVEYOR_REPO_NAME and APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME - if they are the same, this is internal PR. If they are different, then this is a forked pull request

[cypress-bot]

The code for this is done in cypress-io/cypress#4078, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[jennifer-shehane]

Released in 3.3.0