BUG-2475: Do not issue garbage collection on when pushing configurations

This gc() call used to make sense when we were running this code as a
one-shot initialization (e.g. Hydrogen container). With the Karaf
changes, this was moved into a persistent codepath -- which does not
make sense at all.

Change-Id: I0e3d4a2b674241c80d682630b031fb3517621251
Signed-off-by: Robert Varga <rovarga@cisco.com>
Merge "BUG-2475: Do not issue garbage collection on when pushing configurations"