sepolicy: Define policy rules for vendor.opengles.version property

Add label for the property. allow vendor_init,system_server,shell
init_shell to access the property.

These rules are already defined for legacy targets.

Addressing the following denials:

selinux : avc:  denied  { set } for property=vendor.opengles.
version pid=558 uid=0 gid=0 scontext=u:r:qti_init_shell:s0
tcontext=u:object_r:vendor_default_prop:s0 tclass=property_service
permissive=0

Change-Id: I5bbf2670a1a5eec44b53a890654af59b7af059b9