Add App Check token to FirebaseServerApp #13231

Job	Run time
Build Firestore	6m 44s
Test Firestore (test:browser)	9m 7s
Test Firestore Compatible on Firefox	6m 37s
Test Firestore Compatible on Webkit	6m 45s
Test Firestore (test:travis)	3m 40s
Test Firestore Compatible	4m 47s
Test Firestore (test:lite:browser)	1m 34s
Test Firestore (test:browser:prod:nameddb)	9m 2s
Test Firestore on Firefox (test:browser)	7m 28s
Test Firestore (test:lite:browser:nameddb)	1m 32s
Test Firestore on Firefox (test:travis)	4m 17s
Test Firestore on Webkit (test:browser)	11m 18s
Test Nightly Firestore with Chrome	0s
Test Firestore on Webkit (test:lite:browser)	2m 27s
Test Firestore on Webkit (test:browser:prod:nameddb)	12m 28s
Test Firestore on Webkit (test:lite:browser:nameddb)	1m 58s
Test Firestore on Firefox (test:lite:browser)	1m 53s
Test Firestore on Firefox (test:browser:prod:nameddb)	8m 29s
Test Firestore on Firefox (test:lite:browser:nameddb)	1m 37s
Check all required tests results	1s
	1h 41m 44s

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