Tests

Add `apt-get update` before installation of pkgs #1289

Job	Run time
Build bloomberg-comdb2 from source	4m 24s
Build python-comdb2 source distribution	33s
Test suite (3.14-dev)	45s
Test suite (3.9)	53s
Test suite (3.11)	44s
Test suite (3.13)	58s
Test suite (3.8)	45s
Test suite (3.10)	42s
Test suite (3.12)	41s
	10m 25s

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