[Bug 1941785] [NEW] ec2-hibinit-agent: Add support for IMDSv2

[Tim Gardner]

Public bug reported:

[Impact]

Amazon has requested support for IMDSv2 support in ec2-hibinit-agent.

[Fix]

Backport a portion of https://github.com/aws/amazon-ec2-hibinit-
agent.git commit 9d9bca5c61fa9256289e68c88bd3747af2f62e28 ("Add IMDSv2
support")

[Test Case]

Initiate hibernation in an AWS AMI configured for hibernation.
Test an AMI not configured for hibernation.

[Where problems could occur]
Hibernation may stop functioning.

** Affects: ec2-hibinit-agent (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: ec2-hibinit-agent (Ubuntu Impish)
     Importance: Undecided
         Status: New

** Package changed: linux (Ubuntu) => ec2-hibinit-agent (Ubuntu)

** Also affects: ec2-hibinit-agent (Ubuntu Impish)
   Importance: Undecided
       Status: New

** Description changed:

  [Impact]
  
- Current ec2 hibernation init agents do not have support for IMDSv2.
+ Amazon has requested support for IMDSv2 support in ec2-hibinit-agent.
  
  [Fix]
  
  Backport a portion of https://github.com/aws/amazon-ec2-hibinit-
  agent.git commit 9d9bca5c61fa9256289e68c88bd3747af2f62e28 ("Add IMDSv2
  support")
  
  [Test Case]
  
  Initiate hibernation in an AWS AMI configured for hibernation.
  Test an AMI not configured for hibernation.
  
  [Where problems could occur]
  Hibernation may stop functioning.

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https://bugs.launchpad.net/bugs/1941785

Title:
  ec2-hibinit-agent: Add support for IMDSv2

Status in ec2-hibinit-agent package in Ubuntu:
  New
Status in ec2-hibinit-agent source package in Impish:
  New

Bug description:
  [Impact]

  Amazon has requested support for IMDSv2 support in ec2-hibinit-agent.

  [Fix]

  Backport a portion of https://github.com/aws/amazon-ec2-hibinit-
  agent.git commit 9d9bca5c61fa9256289e68c88bd3747af2f62e28 ("Add IMDSv2
  support")

  [Test Case]

  Initiate hibernation in an AWS AMI configured for hibernation.
  Test an AMI not configured for hibernation.

  [Where problems could occur]
  Hibernation may stop functioning.

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