[e2e] Prevent the dockerUp function from failing by retrying when node version check returns undefined

[busma13]

This PR makes the following changes:

• Wrap node version check in a pRetry and throw if undefined. Occasionally e2e tests will fail because using docker compose to exec into the teraslice master and checking the node version will return undefined. It is most likely a timing issue, so we will now attempt this 3 times and then throw if we still get undefined.
• Bump scripts from 0.7.0 to 0.7.1

[sotojn]

Are you saying this happens because runCmd() executes the command and the command fails, leaving undefined as the result?

[sotojn]

Overall this is a good fix in the event docker fails to execute at that moment.

[busma13]

Are you saying this happens because runCmd() executes the command and the command fails, leaving undefined as the result?

I have not been able to reproduce locally. All I know is that compose.runCmd does not error and receives undefined as stdout to docker compose exec teraslice-master node --version. My guess is that node --version fails for some unknown reason.