cherry-pick #7521 Update ingress to go 1.17 (#7531)

* fix boilerplate verification

* fix go fmt error

* fix go mod error

* bump e2e-test-runner version

* bump github ci workflow to go 1.17

* bump go.mod to 1.17

hack/boilerplate/boilerplate.py

@@ -193,7 +193,7 @@ def get_regexs():
         '(%s)' % "|".join(map(lambda l: str(l), years)))
     # strip // +build \n\n build constraints
     regexs["go_build_constraints"] = re.compile(
-        r"^(// \+build.*\n)+\n", re.MULTILINE)
+        r"^((// \+build.*\n)|(//go:build.*\n))+\n", re.MULTILINE)
     # strip #!.* from shell scripts
     regexs["shebang"] = re.compile(r"^(#!.*\n)\n*", re.MULTILINE)
     return regexs

hack/tools.go

@@ -1,3 +1,4 @@
+//go:build tools
 // +build tools
 
 /*