Site and Org associations

[dataclouder]

Add resources and data sources to handle site and org associations:

Data sources:

• vcd_multisite_site to read site information
• vcd_multisite_site_data to get association data from current site
• vcd_multisite_site_association to show information about an existing site association
• vcd_multisite_org_data to get association data from current org
• vcd_multisite_org_association to show information about an existing org association
• Improve vcd_resource_list to show lists of vcd_multisite_site_association and vcd_multisite_org_association

Resources:

• vcd_multisite_site_association to create and remove site associations
• vcd_multisite_org_association to create and remove org associations

Miscellaneous

• Add import procedures
• Write comprehensive test
• Check data-source-not-found test
• Check org-user test
• Check binary test
• Write documentation for each resource/data source
• write a guide for site and org association operations
• Write examples for some association workflows

To test, read the note in TestVcdMultisiteSiteAssociation, containing the environment variables we need to set to start the test.
(Tested with 10.4.2, 10.5.1, 10.6.0)

[dataclouder]

Reminder to remove this replacement before merging

[dataclouder]

Reminder: change these URLs before merging

[lvirbalas]

First pass. Looks awesome.

[lvirbalas]

It's great!