docs/development/vendoring.md is out of date

[johngmyers]

1. What kops version are you running? The command kops version, will display
this information.

Master branch

2. What Kubernetes version are you running? kubectl version will print the
version if a cluster is running or provide the Kubernetes version specified as
a kops flag.

Not applicable

3. What cloud provider are you using?

Not applicable

4. What commands did you run? What is the simplest way to reproduce this issue?

Read docs/development/vendoring.md section on "Adding a dependency to the vendor directory". Followed steps (1) and (2)

5. What happened after the commands executed?

echo "`make dep-ensure` has been replaced by `make gomod`"
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: line 0: cd: /src/k8s.io/kops: No such file or directory
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: fork: Resource temporarily unavailable
/bin/sh: fork: Resource temporarily unavailable
make[164]: *** [dep-ensure] Error 1

and so on.

6. What did you expect to happen?

The dependency to be imported and added to the vendor subdirectory, as per the documentation.

7. Please provide your cluster manifest. Execute
kops get --name my.example.com -o yaml to display your cluster manifest.
You may want to remove your cluster name and other sensitive information.

Not applicable

8. Please run the commands with most verbose logging by adding the -v 10 flag.
Paste the logs into this report, or in a gist and provide the gist link here.

dr33vp2:kops jgmyers$ make -v 10 dep-ensure
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

This program built for i386-apple-darwin11.3.0

9. Anything else do we need to know?

iMac:kops jgmyers$ ps x | grep 'make'
46305 s000  S+     0:00.02 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure
46335 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46336 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46337 s000  S+     0:00.01 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure
46367 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46368 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46369 s000  S+     0:00.01 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure
46399 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46400 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46401 s000  S+     0:00.01 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure
46431 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46432 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46433 s000  S+     0:00.01 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure
46463 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46464 s000  S+     0:00.00 /bin/sh -c echo "`make dep-ensure` has been replaced by `make gomod`"
46465 s000  S+     0:00.01 /Library/Developer/CommandLineTools/usr/bin/make dep-ensure

...and so on.

[johngmyers]

/area documentation