Fix punctuation in gorouter spec descriptions

- (just an excuse to modify a job)

[#71479974]

Signed-off-by: David Varvel <dvarvel@pivotallabs.com>
Revert "Remove unused libyaml package"

libyaml must exist due to a bug in bosh https://www.pivotaltracker.com/story/show/71524826

This reverts commit a7643f0adc51940a27e75a44a61d3678cbdae329.
Bump src/gorouter

Bump :
  Michael Fraenkel:
     Fix log message
  fraenkel:
     Drain and Stop the gorouter
     Refactor, remove unneeded bits
     Fix all data races
  Karl Isenberg:
     Abstracted test app locking
     Added -race to the test script
     Updated readme to reflect ginkgo and test script changes
     More robust test script for use on CI environments
     Convert testcases to Ginkgo/Gomega

[#69785590] [#63154330]

Signed-off-by: David Varvel <dvarvel@pivotallabs.com>
Revert "Bump src/gorouter"

This reverts commit 93f115e0425c11266ab1598a516440995b1ff871.
Force rebuild of gorouter package.

Signed-off-by: David Varvel <dvarvel@pivotallabs.com>