[BUG] no access to opts and sls vars in pyobjects renderer

[nicholasmhughes]

Description
The pyobjects renderer doesn't have access to the opts dictionary or sls variable, which are available in the default jinja renderer.

Expected behavior
I'd expect feature parity across all renderers.

Versions Report

salt --versions-report

(Provided by running salt --versions-report. Please also mention any differences in master/minion versions.)

Salt Version:
               Salt: 3004.2
 
Dependency Versions:
               cffi: Not Installed
           cherrypy: Not Installed
           dateutil: 2.7.3
          docker-py: Not Installed
              gitdb: 2.0.5
          gitpython: 2.1.11
             Jinja2: 2.10
            libgit2: Not Installed
           M2Crypto: Not Installed
               Mako: Not Installed
            msgpack: 0.5.6
       msgpack-pure: Not Installed
       mysql-python: Not Installed
          pycparser: Not Installed
           pycrypto: 2.6.1
       pycryptodome: 3.6.1
             pygit2: Not Installed
             Python: 3.7.3 (default, Jan 22 2021, 20:04:44)
       python-gnupg: Not Installed
             PyYAML: 3.13
              PyZMQ: 17.1.2
              smmap: 2.0.5
            timelib: Not Installed
            Tornado: 4.5.3
                ZMQ: 4.3.1
 
Salt Extensions:
 saltext.prometheus: 1.1.1
 
System Versions:
               dist: debian 10 buster
             locale: UTF-8
            machine: x86_64
            release: 4.19.0-21-amd64
             system: Linux
            version: Debian GNU/Linux 10 busterSalt Version:
               Salt: 3004.2
 
Dependency Versions:
               cffi: Not Installed
           cherrypy: Not Installed
           dateutil: 2.7.3
          docker-py: Not Installed
              gitdb: 2.0.5
          gitpython: 2.1.11
             Jinja2: 2.10
            libgit2: Not Installed
           M2Crypto: Not Installed
               Mako: Not Installed
            msgpack: 0.5.6
       msgpack-pure: Not Installed
       mysql-python: Not Installed
          pycparser: Not Installed
           pycrypto: 2.6.1
       pycryptodome: 3.6.1
             pygit2: Not Installed
             Python: 3.7.3 (default, Jan 22 2021, 20:04:44)
       python-gnupg: Not Installed
             PyYAML: 3.13
              PyZMQ: 17.1.2
              smmap: 2.0.5
            timelib: Not Installed
            Tornado: 4.5.3
                ZMQ: 4.3.1
 
Salt Extensions:
 saltext.prometheus: 1.1.1
 
System Versions:
               dist: debian 10 buster
             locale: UTF-8
            machine: x86_64
            release: 4.19.0-21-amd64
             system: Linux
            version: Debian GNU/Linux 10 buster