Add gcloud bin path and completion to bash profile

- Updated installation script to add gcloud bin path to user’s bash profile to ensure gcloud and its binary components are accessible from the command line and bash completion to improve usability by allowing users to auto-complete commands, flags, and resource names.
- Removed linking unnecessary binary components individually since gcloud bin path will now be accessible.

Author: maythazin5

Casks/g/gcloud-cli.rb

@@ -25,17 +25,14 @@
     args:       [
       "--quiet",
       "--usage-reporting", "false",
-      "--bash-completion", "false",
-      "--path-update", "false",
-      "--rc-path", "false",
+      "--bash-completion", "true",
+      "--path-update", "true",
       "--install-python", "false",
       "--update-installed-components"
     ],
   }
   binary "google-cloud-sdk/bin/bq"
-  binary "google-cloud-sdk/bin/docker-credential-gcloud"
   binary "google-cloud-sdk/bin/gcloud"
-  binary "google-cloud-sdk/bin/git-credential-gcloud.sh", target: "git-credential-gcloud"
   binary "google-cloud-sdk/bin/gsutil"
   bash_completion "google-cloud-sdk/completion.bash.inc", target: "google-cloud-sdk"
   zsh_completion "google-cloud-sdk/completion.zsh.inc", target: "_google_cloud_sdk"
@@ -47,7 +44,7 @@
   end
 
   postflight do
-    # HACK: Allow existing shell profiles to work by linking the current version to the `latest` directory.
+    # Allow existing shell profiles to work by linking the current version to the `latest` directory.
     unless (latest_path = staged_path.dirname/"latest").directory?
       FileUtils.ln_s staged_path, latest_path, force: true
     end