Run apt-get update before installing log related packages

ubuntu has an old apt cache upon a fresh installation, so some
package may not be in the cache yet because I noticed some dstat
installation failures due to no condidate found, so run apt-get update
first before installing packages.

Change-Id: I02cc51c45ab65a8eb9c915a87fad28aa4d844acb
Merge "Run apt-get update before installing log related packages"