Security: user can get admin token through deployments

[Timur Nurlygayanov]

*Step To Reproduce*

1. Get valid X-Auth-Token with admin rules
2. Via REST API: Create environment, create session, create any service, deploy session
3. Get valid X-Auth-Token with user rules
4. Get deployments info (http://ip:8082/environments/env_id/deployments)

*Observed result*
In response user can find admin token:
{code} ( {'deployments': [{....'environment_id': '4f88aeca83924947ad2c66008de4d38e', 'description': {....'token': 'MIINWwYJKoZIhvcNAQcCoIINTDCCDUgCAQExCTAHB... }}]
{code}