<!--- Provide a general summary of your changes in the Title above -->
## Description
Add HSDP IAM audit capabilities to oauth2 proxy
## Motivation and Context
HSDP IAM does not provide important audit capabilities out of the box
such as successful login and some key auth errors.
## How Has This Been Tested?
Tested locally with:
```sh
export OAUTH2_PROXY_ENABLE_AUDIT='true'
export OAUTH2_PROXY_AUDIT_URL='url'
export OAUTH2_PROXY_AUDIT_PRODUCT_NAME='Reporting'
export OAUTH2_PROXY_AUDIT_PRODUCT_KEY='product key'
export OAUTH2_PROXY_AUDIT_SHARED_KEY='shared key'
export OAUTH2_PROXY_AUDIT_SECRET_KEY='secret'
```
## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes
that apply. -->
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- [ ] My change requires a change to the documentation or CHANGELOG.
- [ ] I have updated the documentation/CHANGELOG accordingly.
- [ ] I have created a feature (non-master) branch for my PR.
<!--- Provide a general summary of your changes in the Title above -->
## Description
<!--- Describe your changes in detail -->
## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->
## How Has This Been Tested?
<!--- Please describe in detail how you tested your changes. -->
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to -->
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## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes
that apply. -->
<!--- If you're unsure about any of these, don't hesitate to ask. We're
here to help! -->
- [ ] My change requires a change to the documentation or CHANGELOG.
- [ ] I have updated the documentation/CHANGELOG accordingly.
- [ ] I have created a feature (non-master) branch for my PR.
<!--- Provide a general summary of your changes in the Title above -->
## Description
<!--- Describe your changes in detail -->
Allow setting arbitrary URLs for oauth2 proxy cookie refresh mechanism.
#49
## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->
## How Has This Been Tested?
<!--- Please describe in detail how you tested your changes. -->
<!--- Include details of your testing environment, and the tests you ran
to -->
<!--- see how your change affects other areas of the code, etc. -->
## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes
that apply. -->
<!--- If you're unsure about any of these, don't hesitate to ask. We're
here to help! -->
- [ ] My change requires a change to the documentation or CHANGELOG.
- [ ] I have updated the documentation/CHANGELOG accordingly.
- [ ] I have created a feature (non-master) branch for my PR.