Avoid failures when other runners are already registered with same name #127

[Yonatan Romero (romeroyonatan)]

Issue

[  355.184408] cloud-init[1213]: A runner exists with the same name
[  355.184574] cloud-init[1213]: Would you like to replace the existing runner? (Y/N) [press Enter for N] Enter the name of runner: [press Enter for ip-10-20-24-96]
[  355.184669] cloud-init[1213]: This runner will have the following labels: 'self-hosted', 'Linux', 'X64'
[  355.184816] cloud-init[1213]: Enter any additional labels (ex. label-1,label-2): [press Enter to skip]

Solution

Merging machulav#127