In case of install-applications, moved the services' validations to a new install application validation.
CLOUDIFY-2164 rearranged validations.
CLOUDIFY-2164 Added validations and tests.
CLOUDIFY-2164 Added validations and tests.
CLOUDIFY-2160 added error messages
third_party.md
CLOUDIFY-2164 rearranged validations.
CLOUDIFY-2164 arranged validations tests
CLOUDIFY-2160 added error messages
CLOUDIFY-2164 rearranged validations.
CLOUDIFY-2164 Added missing validations and tests.
CLOUDIFY-2164
CLOUDIFY-2164 fixed conflicts after rebase
CLOUDIFY-2164 deleted redundant class
third_party.md