remove legacy ipmid_get_sd_bus_connection calls

The new way is to use the shared_ptr to the sdbusplus::asio::
connection. A shared pointer is cheaper to instantiate than
a dbus object. This also paves the way to eventually replace
many of the blocking dbus calls with yielding or async dbus
calls.

Change-Id: Iea326782266d769457851aabf98e2e582d1bf81e
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
9 files changed