Update openApi config to use "security" instead of "x-security". (#347)
Update openApi config to use "security" instead of "x-security". (#347)

* Update openApi config to use "seucurity" instead of "x-security".

* Fix google ID token issuer.

JustinBeckwith/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,thesandlord/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,JustinBeckwith/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,thesandlord/nodejs-docs-samples,JustinBeckwith/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples