ca-certificate fix

Author: Kyle-Neale

mapr/tests/conftest.py

@@ -15,7 +15,7 @@
         # customers are expected to install the package themselves.
         # We do that here for the e2e testing environment.
         'apt-get update',
-        'apt-get install -y gcc gnupg lsb-release ca-certificates',
+        'DEBIAN_FRONTEND=noninteractive apt-get install -y gcc gnupg lsb-release ca-certificates',
         # mapr-streams-python requires librdkafka headers as they're not shipped with the Agent
         # This requires adding confluent's APT repositories. These steps are based on the docs in
         # - https://docs.confluent.io/platform/current/installation/installing_cp/deb-ubuntu.html#get-the-software