Update Rubin ps-connector.properties file

[hernandezc1]

sed -i "s/PS_TOPIC/${PS_TOPIC}/g" ${fconfig}

Line 71 in the VM's startup script, displayed above, updates the value PS_TOPIC in the ps-connector.properties file with the appropriate PubSub topic name. Due to a typo in the ps-connector.properties file, the startup script was unable to update the PS_TOPIC value. This PR fixes the typo.

Changes have been tested. No additional bugs detected

[wmwv]

This change is obviously a good fix.

[wmwv]

But more broadly, this sed command implies that PS_TOPIC can't have special characters (~, &, \1) that would might something in a regex or be interpreted by the sed command (/). Is that already a requirement by GCP, and is it already documented?

[hernandezc1]

But more broadly, this sed command implies that PS_TOPIC can't have special characters (~, &, \1) that would might something in a regex or be interpreted by the sed command (/). Is that already a requirement by GCP, and is it already documented?

@wmwv GCP does have a guideline for naming a topic, subscription, schema, or snapshot. With the way Pub/Sub resources are currently created, I can see this becoming an issue if the testid contains a special character. However, our docs explicitly state that the testid is a string of lowercase letters and numbers, beginning with a letter.