General fixes to install script

[phra]

installing empire as non-root user will fail where sudo is not used.

[phra]

supersedes #1211

[bisack]

You changed the package on line 140, but failed to update the package name on 141 to match. If you run the setup script like this, you still get an error that libssl1.0.0_1.0.1t-1+deb8u7_amd64.deb cannot be found.
When I fixed this locally and re-tried, I got the following dpkg warning:
dpkg: warning: downgrading libssl1.0.0:amd64 from 1.0.1t-1+deb8u9 to 1.0.1t-1+deb8u8.

[phra]

@bisack thanks for the comment, i will fix it later.

[phra]

@bisack fixed. can you please check and change your review status? thanks.

[bisack]

@phra -- While the current version is indeed deb8u9 - that url is incorrect and results in a 404 error. I found 8u8 DOES work, and resolves some of the issues I ran into.

In order to unblock my own workflow, I created a fork so I could re-enable my environment auto-builds. That change and two others (to fix the powershell installation failure and the urllib3 version issue) make up my pull request.

See #1268 for the changes I made.

Edit: Apologies for my somewhat stumbling/sloppy contributions, I'm still trying to get a grasp on the whole github thing.

[bisack]

@phra -- While the current version is indeed deb8u9 - that url results in a 404 error. I found 8u8 DOES work, and resolves libssl issues I had. My suggestion would be to either move to 8u8 or find a working package URL for 8u9.

[phra]

@bisack i am going to close this PR in favor of #1268. thanks for your contribution.