Fixed int tests for CI.

Fix only GC: To enable impersonation functionality testing, we need to create a request to the Partition service to obtain a Google Cloud Service Account (SA).

Previously, we mistakenly used the 'Authorization' header with the value 'Bearer null'. Now, we've corrected this behavior to use the 'Authorization' header with the value 'Bearer ', where is generated by the TokenService. The Keycloak provider is utilized for the baremetal module, while the Google token provider is used for Google Cloud.