fix: increase timeout for gcs download test

This test is crazy slow in CI lately, taking upwards of 50 seconds.  It runs
quickly locally, so I'm imagining this is some network change in gcp.

We need a build now, and the test passes in both locations, so I'm just
upping the timeout and crossing my fingers.

Authored-by: Steve Taylor <sttaylor@vmware.com>

acceptance/download_product_gcs_test.go

@@ -86,7 +86,7 @@ var _ = Describe("download-product command", func() {
 
 				session, err := gexec.Start(command, GinkgoWriter, GinkgoWriter)
 				Expect(err).ToNot(HaveOccurred())
-				Eventually(session, "10s").Should(gexec.Exit(0))
+				Eventually(session, "2m").Should(gexec.Exit(0))
 				Expect(session.Err).To(gbytes.Say(`attempting to download the file.*example-product.pivotal.*from source google`))
 				Expect(session.Err).To(gbytes.Say(`attempting to download the file.*light-bosh-stemcell-97.57-google-kvm-ubuntu-xenial-go_agent.tgz.*from source google`))
 				Expect(session.Err).To(gbytes.Say(`Writing a list of downloaded artifact to download-file.json`))
@@ -116,7 +116,7 @@ var _ = Describe("download-product command", func() {
 
 				session, err = gexec.Start(command, GinkgoWriter, GinkgoWriter)
 				Expect(err).ToNot(HaveOccurred())
-				Eventually(session, "10s").Should(gexec.Exit(0))
+				Eventually(session, "2m").Should(gexec.Exit(0))
 				Expect(string(session.Err.Contents())).To(ContainSubstring("[pivnet-example-slug,1.10.1]example-product.pivotal already exists, skip downloading"))
 				Expect(string(session.Err.Contents())).To(ContainSubstring("[stemcells-ubuntu-xenial,97.57]light-bosh-stemcell-97.57-google-kvm-ubuntu-xenial-go_agent.tgz already exists, skip downloading"))