Add support for running the emulators in Cloud Workstation #14246

Job	Run time
Build Firestore	5m 25s
Test Firestore Compatible	3m 53s
Test Firestore (test:lite:browser)	1m 10s
Test Firestore (test:browser)	7m 2s
Test Firestore (test:travis)	4m 11s
Test Firestore on Firefox (test:travis)	4m 0s
Test Firestore (test:browser:prod:nameddb)	6m 59s
Test Firestore on Firefox (test:lite:browser)	1m 45s
Test Firestore Compatible on Firefox	4m 52s
Test Firestore on Webkit (test:browser:prod:nameddb)	1m 32s
Test Firestore (test:lite:browser:nameddb)	1m 9s
Test Firestore on Webkit (test:browser)	1m 27s
Test Firestore on Webkit (test:lite:browser:nameddb)	1m 42s
Test Firestore on Firefox (test:browser:prod:nameddb)	10m 46s
Test Nightly Firestore with Chrome	0s
Test Firestore on Firefox (test:lite:browser:nameddb)	1m 41s
Test Firestore Compatible on Webkit	6m 23s
Test Firestore on Firefox (test:browser)	12m 0s
Test Firestore on Webkit (test:lite:browser)	1m 43s
Check all required tests results	2s
	1h 17m 42s

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