Add support for running the emulators in Cloud Workstation #14263

Job	Run time
Build Firestore	5m 38s
Test Firestore Compatible on Firefox	5m 39s
Test Firestore on Firefox (test:travis)	4m 16s
Test Firestore Compatible on Webkit	6m 54s
Test Firestore on Firefox (test:browser)	13m 7s
Test Firestore on Firefox (test:lite:browser:nameddb)	1m 49s
Test Firestore on Webkit (test:browser:prod:nameddb)	12m 43s
Test Firestore Compatible	4m 59s
Test Firestore (test:travis)	4m 8s
Test Firestore on Firefox (test:lite:browser)	1m 48s
Test Firestore on Webkit (test:lite:browser:nameddb)	2m 6s
Test Firestore (test:lite:browser)	1m 41s
Test Firestore on Webkit (test:lite:browser)	2m 4s
Test Firestore (test:lite:browser:nameddb)	1m 49s
Test Firestore (test:browser:prod:nameddb)	8m 55s
Test Firestore (test:browser)	8m 43s
Test Firestore on Webkit (test:browser)	12m 43s
Test Firestore on Firefox (test:browser:prod:nameddb)	12m 44s
Test Nightly Firestore with Chrome	0s
Check all required tests results	2s
	1h 51m 48s

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