Attribute realignment in parameter contexts
Adds parameter_type to pcontext
Updates coverage reference for attr changes
Realigns the parameter attributes in preload/pydap
Bumps cov model
Fixes some registration attr alignment
Merge branch 'master' of github.com:ooici/coi-services into params

Conflicts:
	extern/ion-definitions
Merge pull request #719 from lukecampbell/params

Params