Work around sudo timeouts for long-running commands during bootstrap

[padthaitofuhot]

Some commands run for a long time. When sudo is used to execute these long-running commands and successive commands, then it is possible for the sudo auth token to expire and re-prompt for the account password. If the user does not notice this before the authentication attempt times out, the bootstrap script may continue on without executing an important step. Problems caused by this can be resolved by re-running the bootstrap script. However, to smooth things out and prevent what to the user may look like "mystery errors", sudo token reauthorizations should be placed into a retry loop.

[adrianmo]

@padthaitofuhot what if we force users to run the bootstrap script as root?

Something like this at the beginning of the script:

if [ $EUID != 0 ]; then
    echo "Not running as root"
    exit
fi
...