Hardware ID and Release Counter (Resolved Merge Conflicts, Cleaner Code and Tests)

[shikhar394]

Purpose of the PR:

This is new PR that reflects changes from a previous PR for Hardware ID and Release Counter.

Includes code that implements hardware IDs and Release Counters for ECUs and implemented 3 attacks:

Image_rollback_attack : A compromised director attempting to install an image with an outdated release counter.
Confused_bundle_attack : A compromised director attempting to install an image with mismatching release counters.
Sneaky_director_attack : A compromised director attempting to install an image with mismatching hardware IDs. Basically, intending to install an image on an ECU which it was not meant for through leveraging the ECU Serial.

All these attacks can be called in the script through the following, please see the function definitions for more advanced function calls:
The names correspond with the usual demos.
image_rollback_attack
di.image_rollback_attack("Attack1.img")
dd.image_rollback_attack("Attack1.img")
dp.update_cycle()
ds.update_cycle()

confused_bundle_attack
di.confused_bundle_attack("Attack2.img")
dd.confused_bundle_attack("Attack2.img")
dp.update_cycle()
ds.update_cycle()

sneaky_director_attack
di.sneaky_director_attack("Attack3.img")
dd.sneaky_director_attack("Attack3.img")
dp.update_cycle()

Summary of Changes:

• Refactored and cleaner code
• Solved merge conflicts
• Tests

Further Requirements:

More Testing

Greetings,
I have implemented release counters and hardwareIDs in all the relevant Uptane modules, including errors and exceptions linked to it.

[awwad]

For previous comments, see #117, which I'm now closing.