Fix seinfo argument parsing when policy path follows query options

[pranlawate]

When we run commands with flags/options that can optionally take argument value like -t, -r, etc. along with policy file. It breaks the behavior because the entire policy file path is wrongly taken as value for the argument before it.

seinfo -t /path/to/policy.33 -> will take /path/to/policy.33 as string argument for -t and show 0 results, when it should show all types without any string argument filtering from the policy.

The workaround is
seinfo /path/to/policy.33 -t

I have added a fix to ensure the we check the argument followed by any of the args in 'queries' when args.policy is not detected already. Then verify the next argument is a valid path , if yes then add it to args.policy otherwise it's an argument value. Since there are not args which actually take a path, my fix should work properly.
I have tested it for -t with policy, without policy , with value and policy, with value and no policy. Similarly have tested -r and -a for all 4 combinations.