github/repository*: support individual user for resource management (limited to authenticated user)

[anGie44]

Closes #45
Relates #371

• Changes include:
  • builds off of github/provider: introduce owner  #464
  • support for lifecycle management of repo-related resources with authenticated user
    • renaming of org(Name) -> owner and removal of checkOrganization in CRUD methods

Output of acceptance tests (as organization):
GithubRepository:

--- PASS: TestAccGithubRepository_hasProjects (6.15s)
--- PASS: TestAccGithubRepository_archive (7.63s)
--- PASS: TestAccGithubRepository_createFromTemplate (7.69s)
--- PASS: TestAccGithubRepository_basic (12.22s)
--- PASS: TestAccGithubRepository_defaultBranch (13.08s)
--- PASS: TestAccGithubRepository_templates (16.71s)
--- PASS: TestAccGithubRepository_topics (19.53s)
--- PASS: TestAccGithubRepository_archiveUpdate (22.18s)
--- PASS: TestAccGithubRepository_autoInitForceNew (27.79s)

GithubRepositoryDeployKey:

--- PASS: TestAccGithubRepositoryDeployKey_basic (11.11s)

GithubRepositoryProject:

--- PASS: TestAccGithubRepositoryProject_basic (10.52s)

GithubRepositoryWebhook:

--- PASS: TestAccGithubRepositoryWebhook_secret (12.16s)
--- PASS: TestAccGithubRepositoryWebhook_basic (16.51s)

GithubRepositoryDataSource:

--- PASS: TestAccGithubRepositoryDataSource_name_noMatchReturnsError (0.35s)
--- PASS: TestAccGithubRepositoryDataSource_fullName_noMatchReturnsError (0.38s)
--- PASS: TestAccGithubRepositoryDataSource_fullName_existing (1.88s)
--- PASS: TestAccGithubRepositoryDataSource_name_existing (2.15s)
--- PASS: TestAccGithubRepositoryDeployKey_basic (11.01s)

GithubRepositoriesDataSource:

--- PASS: TestAccGithubRepositoriesDataSource_noMatch (2.07s)
--- PASS: TestAccGithubRepositoriesDataSource_basic (3.31s)
--- PASS: TestAccGithubRepositoriesDataSource_Sort (40.60s)

Output of acceptance tests (as user):
GithubRepository:

--- PASS: TestAccGithubRepository_hasProjects (5.20s)
--- PASS: TestAccGithubRepository_createFromTemplate (6.25s)
--- PASS: TestAccGithubRepository_basic (9.60s)
--- PASS: TestAccGithubRepository_templates (10.88s)
--- PASS: TestAccGithubRepository_archiveUpdate (11.04s)
--- PASS: TestAccGithubRepository_archive (11.11s)
--- PASS: TestAccGithubRepository_defaultBranch (11.17s)
--- PASS: TestAccGithubRepository_topics (17.68s)
--- SKIP: TestAccGithubRepository_autoInitForceNew (0.23s)

GithubRepositoryDeployKey:

--- PASS: TestAccGithubRepositoryDeployKey_basic (10.57s)

GithubRepositoryProject:

--- PASS: TestAccGithubRepositoryProject_basic (9.50s)

GithubRepositoryWebhook:

--- PASS: TestAccGithubRepositoryWebhook_secret (14.97s)
--- PASS: TestAccGithubRepositoryWebhook_basic (19.19s)

GithubRepositoryDataSource:

--- PASS: TestAccGithubRepositoryDataSource_name_noMatchReturnsError (0.33s)
--- PASS: TestAccGithubRepositoryDataSource_fullName_noMatchReturnsError (0.62s)
--- PASS: TestAccGithubRepositoryDataSource_name_existing (1.42s)
--- PASS: TestAccGithubRepositoryDataSource_fullName_existing (1.43s)
--- PASS: TestAccGithubRepositoryDeployKey_basic (10.18s)

GithubRepositoriesDataSource:

--- PASS: TestAccGithubRepositoriesDataSource_noMatch (1.10s)
--- PASS: TestAccGithubRepositoriesDataSource_basic (2.07s)
--- PASS: TestAccGithubRepositoriesDataSource_Sort (15.34s)

[jcudit]

@anGie44 my local testing has gone well with this branch, but seem to have gotten this PR into a broken state. Can you force push what you have locally so we can merge? My aim is to follow up with acceptance test fixes in separate PRs.