Consider changing "run" to use temporary script files

[solvingj]

I noticed this in azure pipelines log:

##[command]"C:\windows\system32\cmd.exe" /D /E:ON /V:OFF /S /C "CALL "D:\a\_temp\e89baa3f-7c45-4af5-90e8-16c62e8dbc25.cmd""

and this on linux

[command]/bin/bash --noprofile --norc /home/vsts/work/_temp/74d504a3-043d-4534-a3f4-cb1c9041ed03.sh

I've seen the pattern in jenkins logs and other logs as well. I'm sure that we'll hit situations where people want to run command-lines requiring quotes, and then escaping various characters will start to become a real nuisance. I think this technique is probably the most reliable approach.