chore(ci): fix deploy-code CI job

In #17060, the `deploy-code` job was updated to [include][1] the
`init_environment` custom command. This caused the job to start failing,
because  the `init_environment` command was not compatible with the
`cloud-sdk` executor used in `deploy-code`. There were two problems:

1. The `init_environment` command assumes that the working directory is
   `~/ng`. The `cloud-sdk` executor [did not specify][2] a working
   directory.
   Example failures:
     - On master:
       https://app.circleci.com/pipelines/github/angular/angular.js/
       152/workflows/812df7b2-4bba-4e9e-a868-8c58db5d40d1/jobs/1594
     - On v1.8.x:
       https://app.circleci.com/pipelines/github/angular/angular.js/
       153/workflows/6a9826ac-d191-4042-8c39-0c969c81e381/jobs/1607

2. The `install_java` step, which is part of the `init_environment`
   command, relies on `sudo`, which is not available in the `cloud-sdk`
   executor.
   Example failure:
   - [On a PR]:
     https://app.circleci.com/pipelines/github/angular/angular.js/
     160/workflows/2eed5cfa-751c-44ba-b825-1d6cd5ba3406/jobs/1660

This commit fixes the issues by:
1. Specifying a working directory for the `cloud-sdk` executor. It also
   updates paths used in other steps of the `deploy-code` job to take
   the working directory into account.
2. Removing the `install_java` step from the `init_environment` command
   and adding it explicitly to jobs than require it.

[1]: https://github.com/angular/angular.js/blob/83f084e5db95768dcee5/.circleci/config.yml#L359
[2]: https://github.com/angular/angular.js/blob/83f084e5db95768dcee5/.circleci/config.yml#L34-L37

Author: gkalpak

.circleci/config.yml

@@ -35,6 +35,7 @@ executors:
     description: The docker container to use when running gcp-gcs commands
     docker:
       - image: google/cloud-sdk:alpine@sha256:7d0cae28cb282b76f2d9babe278c63c910d54f0cceca7a65fdf6806e2b43882e
+    working_directory: ~/ng
 
 
 # Filter Definitions
@@ -157,7 +158,6 @@ commands:
             echo 'github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==' >> ~/.ssh/known_hosts
             git config --global url."ssh://[email protected]".insteadOf "https://github.com" || true
             git config --global gc.auto 0 || true
-      - install_java
 
   init_saucelabs_environment:
     description: Sets up a domain that resolves to the local host.
@@ -231,6 +231,7 @@ jobs:
     steps:
       - checkout
       - init_environment
+      - install_java
       - run:
           name: Running Yarn install
           command: yarn install --frozen-lockfile --non-interactive
@@ -259,6 +260,7 @@ jobs:
     steps:
       - custom_attach_workspace
       - init_environment
+      - install_java
       - init_saucelabs_environment
       - run: yarn grunt test:promises-aplus
       - run:
@@ -358,7 +360,7 @@ jobs:
       - custom_attach_workspace
       - init_environment
       - skip_unless_tag_or_master_or_stable_branch
-      - run: ls ~/ng/deploy/code
+      - run: ls deploy/code
       - run:
           name: Authenticate and configure Docker
           command: |
@@ -367,7 +369,7 @@ jobs:
       - run:
           name: Sync files to code.angularjs.org
           command: |
-            gsutil -m rsync -r ~/ng/deploy/code gs://code-angularjs-org-338b8.appspot.com
+            gsutil -m rsync -r deploy/code gs://code-angularjs-org-338b8.appspot.com
 
   # The `deploy-docs` job should only run when all of these conditions are true for the build:
   # - It is for the `angular/angular.js` repository (not a fork).