E2E Tests - All #179

Job	Run time
Generate the matrix for subscriptions-tests dynamically	1s
WP - nightly \| WC - latest \| wcpay - merchant	3m 36s
WP - nightly \| WC - latest \| wcpay - shopper	3m 34s
WP - nightly \| WC - latest \| subscriptions - merchant	5m 18s
WP - nightly \| WC - latest \| subscriptions - shopper	4m 4s
WC - 7.5.0 \| wcpay - merchant	3m 56s
WC - 7.5.0 \| wcpay - shopper	3m 31s
WC - 7.5.0 \| subscriptions - merchant	4m 40s
WC - 7.5.0 \| subscriptions - shopper	5m 26s
WC - latest \| wcpay - merchant	4m 39s
WC - latest \| wcpay - shopper	3m 53s
WC - latest \| subscriptions - merchant	3m 55s
WC - latest \| subscriptions - shopper	5m 12s
WC - beta \| wcpay - merchant	3m 35s
WC - beta \| wcpay - shopper	3m 34s
WC - beta \| subscriptions - merchant	3m 50s
WC - beta \| subscriptions - shopper	4m 19s
	1h 7m 3s

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