COCOS-326 - Add vTPM support to CoCoS (#376)

* manager, cli and agent vtpm support

* rebase and changed atls for vtpm

* deleted unused code

* changed chekproto.yaml script so it find the manager proto file correctly

* fixe manager proto version

* fix agent tests

* fix server agent test

* fix attestation test

* fix attestation test gofumpt

* created dummy RWC for TPM

* fix comment

* add default PCR values

* rebase main

* fix rust ci and missing header

* changed embedded  attestation to VMPL 2

* fix unused impot

* fix pkg test

* address attestation type

* fix agent attestation test

* add prc15 check

* fix comments

* fix cli tests

* add doc

* add mock for LeveledQuoteProvider when SEV-SNP device is not found

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* fix manager reading attestation policy

* refactor PCR value checks and update attestation policy values

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* fix tests for sev and grpc

---------

Signed-off-by: Sammy Oina <sammyoina@gmail.com>
Co-authored-by: Sammy Oina <sammyoina@gmail.com>

test/manual/README.md

@@ -67,7 +67,15 @@ export AGENT_GRPC_ATTESTATION_POLICY=./scripts/attestation_policy/attestation_po
 export AGENT_GRPC_ATTESTED_TLS=true
 
 # Retrieve Attestation
-./build/cocos-cli attestation get '<report_data>'
+# Three different attestation reports can be retrieved:
+#  - SEV-SNP with argument snp for attestation get command.
+./build/cocos-cli attestation get snp --tee '<report_data>'
+
+#  - vTPM with argument vtpm for attestation get command.
+./build/cocos-cli attestation get vtpm --vtpm '<vtpm_nonce>'
+
+#  - vTPM with SEV-SNP with argument snp-vtpm for attestation get command.
+./build/cocos-cli attestation get snp-vtpm --tee '<report_data>' --vtpm '<vtpm_nonce>'
 
 # Validate Attestation
 # Product name must be Milan or Genoa