Several Changes:

Feature: Now commands on the CLI can have comments (e.g. "vmattach tinyvm # this is a comment, and will be ignored").
Feature: Command "rolealter" (works exactly like "typealter" and "patternalter").
Feature: The CSV file that are produced by "monextract" are now sorted by timestamp, and the column "time" now indicates relative time, making much easier to directly plot it.
Feature: A more robust, complete and flexible plotting utility (for csv files produced by monextract): cbplotgen.R, on "util/plot/" directory.
Feature: New CloudBench presentation ("docs" directory).
Code maintenance: Dependencies "netcat" and "pypureomapi" were added to configure.
Code maintenance: Now "monextract" creates csv files on a sub-directory (named after the experiment id) on the "data" directory. Also, it prints out more illustrative message while producing the files.
Code maintenance: New regression test.
Bugfix: Switching experiment identifier (through the command "expid" in the middle of an experiment was causing the host collection to stop).
Bugfix: Command "monlist" works with the new redis datastore adapter (cloud_name was not being properly supplied).
Bugfix: Scripts cb_common.sh and cb_setup_cmk.sh had "klabuser" hard-coded on them.
Bugfix: Using Amazon EC2 with private images not-owned by the CloudBench user, even with authorization to execute such images, was resulting in error.
Merge branch 'master' of github.com:ibmcb/cbtool

Conflicts:
	configs/templates/application_instances.txt
	configs/templates/capture_submitters.txt
	docs/help/vmcrsattach.txt
	lib/api/api_service.py
	lib/auxiliary/data_ops.py
	lib/operations/active_operations.py
	lib/operations/base_operations.py
	lib/operations/passive_operations.py
	lib/stores/redis_datastore_adapter.py
	scripts/hadoop/cb_config_hadoop_cluster.sh
	scripts/hadoop/cb_hadoop_common.sh
	scripts/hadoop/cb_start_hadoop_cluster.sh