Correct glance db_sync command

Closes-Bug: #1263431

Change-Id: I30a53adfdd8e00a9995595af2e090190bac241a0
Change the libvirtd log level to DEBUG

Gate tests fail sometimes due to libvirt problems, but it is difficult
to investigate their reasons or workarounds because there is not any
log about libvirt.
This patch changes the log level of libvirtd to DEBUG for investigating
libvirt problems.

Change-Id: Ib6559ff978fa813d0332f2339d241dd3437196ee
Related-Bug: #1254872
Migrating trove to entry points

partially implements blueprint entrypoints-for-binscripts

Change-Id: Iaafde0ab7f27598d566fc008fba7eddc582139c9
Merge "Migrating trove to entry points"
Merge "Change the libvirtd log level to DEBUG"
Merge "Correct glance db_sync command"