hybrid-quickstart: add workload identity binding for metrics service account

[OmidTahouri]

Description

Enable workload identity for the service account used by Apigee Metrics Thanks to @danistrebel for the spot!

Housekeeping

(please check all that apply [x], do not edit the text)

• [x] I have run all the tests locally and they all pass.
• [x] I have followed the relevant style guide for my changes.
• [ ] PR requires full pipeline run (Run for changes only by default).

CC: @apigee-devrel-reviewers

[OmidTahouri]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
tools/hybrid-quickstart	fail	2386s
TOTAL PIPELINE	pass	2386s

View details in Cloud Build (permission required)

Commit version: bd98b9e

[danistrebel]

/gcbrun

[danistrebel]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
tools/hybrid-quickstart	fail	2349s
TOTAL PIPELINE	pass	2349s

View details in Cloud Build (permission required)

Commit version: cf549fc

[danistrebel]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
tools/hybrid-quickstart	fail	1766s
TOTAL PIPELINE	pass	1766s

View details in Cloud Build (permission required)

Commit version: 9f33015

[danistrebel]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
tools/hybrid-quickstart	pass	2549s
TOTAL PIPELINE	pass	2549s

View details in Cloud Build (permission required)

Commit version: 9f33015