Merge branch 'release/1.2' into develop
prepare for next development iteration.
Merge branch 'hotfix/1.2.1' into develop

Conflicts:
	build.gradle
change JMeter download URL.
set version label to 1.3
Merge branch 'release/1.3'
Merge branch 'release/1.3' into develop
prepare for next development iteration.
added m3 & r3 instance types
deleted InstanceType validation
Merge pull request #5 from mochizuki-masao/new_instance_types

Remove InstanceType validation
set version label to 1.4
Merge branch 'release/1.4'