Updated param descriptions.

[siennathesane]

Thanks for contributing to pcf-pipelines. To speed up the process of reviewing your pull request please provide us with:

• A short explanation of the proposed change:

Set default timeout limit to be under the officially recommended
maximum.

Thanks to @kcboyle for a quick assist with doc references.

Signed-off-by: Mike Lloyd <mlloyd@pivotal.io>

• An explanation of the use cases your change solves:

Fixes known bug in Azure Load Balancer/gorouter configs for new installs.

• Expected result after the change:

Fixes ALB/gorouter bug.

• Current result before the change:

Wrong params.

• Links to any other associated PRs or issues:

• [x] I have viewed signed and have submitted the Contributor License Agreement

• [x] I have made this pull request to the master branch

• [x] I have run all the unit tests

//cc @cwsteve2117

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. Unfortunately, the Pivotal Tracker project is private so you may be unable to view the contents of the story.

The labels on this github issue will be updated when the story is started.

[abbyachau]

Thanks @mxplusb!