Install script feedback

- restart openshift-watchman with rest of services
- rename gear_profile/CONF_GEAR_PROFILE to
  node_profile/CONF_NODE_PROFILE
- refactor conf_no_scramble to no_scramble
- refactor conf_default_districts to default_districts
- refactor conf_valid_gear_sizes to valid_gear_sizes
- properly set default mongo passwords to mongopass if no_scramble is
  true
- move sysctl -p to end of configure_openshift
- update oo-mco call to use ruby directly
- refactor scramble_pass to assign_pass
- refactor displaying passwords
<oo-install> feedback related changes

- refactor references to gear_profile to node_profile
- update env variable for openshift.sh to CONF_NODE_PROFILE
- clean up update_district_mappings
- remove superfluous if/else block
- handle localfile.delete better on ruby 1.8.7 systems
- Fix sort order for username/password prompting on ruby 1.8.7 systems
- remove pseudo-tty from ssh command
- handle ctrl-c more gracefully
  - make sure to set node profile/update district mappings if adding a
    node role to a host when oo-install was previously interrupted
  - handle setting of passwords when adding missing roles to an existing
    host when oo-install was previously interrupted