Handle colon-delimited environmentpath in config_version.sh

[mbaynton]

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environment.conf passes the Puppet configuration value $environmentpath as an argument to config_version.sh. This value supports a colon-separated list of paths, but when one is used the config_version scripts currently bomb out.

This fixes them to handle colon-delimited environmentpath.

[natemccurdy]

@mbaynton Can you share an example of the script bombing out?

[mbaynton]

After modifying the compile master's puppet.conf to include several colon-delimited environment paths, I was getting the following on agents during puppet runs:

Info: Loading facts
Info: Caching catalog for adsinternal-pupp4.msi.umn.edu
Info: Applying configuration version 'fatal: Not a git repository: '/etc/puppetlabs/code/environments:/etc/puppetlabs/code/default_environment/production/.git'
1522333495'

[abuxton]

Apologies this as taken so long to get to @mbaynton can you rebase the pull request please and if it's still required i'll merge it in.

[mbaynton]

Rebased and merged @abuxton Full disclosure I don't currently use Puppet anymore so my ability to test is limited, but did try just invoking the merged version on some different inputs.

[natemccurdy]

I just ran into a similar situation where a : delimited environmentpath wasn't working and used this PR for inspiration to fix fork of config_version.sh

It works 👍

Though I do have a minor style nitpick about using upper case variables for things that aren't environment variables.

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