ACCUMULO-1576 Adding some quoting to the pkill patterns in the continuous ingest
test suite stop scripts to prevent shell-expansion of said patterns.
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT

Conflicts:
	test/system/continuous/stop-batchwalkers.sh
	test/system/continuous/stop-ingest.sh
	test/system/continuous/stop-scanners.sh
	test/system/continuous/stop-walkers.sh