[Tests-Only] allow acceptance testing against fed server from PR branch

[phil-davis]

Description

We currently use the daily-master-qa tarball to install a federated server for acceptance tests. But it sometimes happens that the PR being tested has fixes that are needed on both the "local" and "remote" (federated) servers.

Adjust .drone.star so that both the "local" and "remote" servers-under-test can run the code from the PR. An entry "git" in federatedServerVersions means to install the federated server from git (rather than from some existing release tarball), and to use the branch of the current PR.

In drone starlark, ctx.build.source has the branch of the current PR.

How Has This Been Tested?

CI

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:
• Changelog item, see TEMPLATE

[codecov]

Codecov Report

Merging #37838 into master will increase coverage by 17.01%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master   #37838       +/-   ##
=============================================
+ Coverage     47.74%   64.75%   +17.01%     
- Complexity        0    19392    +19392     
=============================================
  Files           111     1284     +1173     
  Lines         10971    75755    +64784     
  Branches       1333     1333               
=============================================
+ Hits           5238    49057    +43819     
- Misses         5341    26306    +20965     
  Partials        392      392               

Flag	Coverage Δ	Complexity Δ
#javascript	54.03% <ø> (ø)	0.00 <ø> (ø)
#phpunit	65.94% <ø> (+31.93%)	19392.00 <ø> (+19392.00)

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Impacted Files	Coverage Δ	Complexity Δ
...ivate/IntegrityCheck/Helpers/EnvironmentHelper.php	100.00% <0.00%> (ø)	2.00% <0.00%> (?%)
lib/private/Files/Node/AbstractFile.php	100.00% <0.00%> (ø)	6.00% <0.00%> (?%)
lib/private/User/User.php	88.88% <0.00%> (ø)	73.00% <0.00%> (?%)
lib/private/Session/Memory.php	86.95% <0.00%> (ø)	11.00% <0.00%> (?%)
settings/routes.php	100.00% <0.00%> (ø)	0.00% <0.00%> (?%)
lib/private/Files/Cache/Watcher.php	97.22% <0.00%> (ø)	19.00% <0.00%> (?%)
lib/private/Files/Storage/Wrapper/Jail.php	76.27% <0.00%> (ø)	55.00% <0.00%> (?%)
core/Command/Db/ConvertMysqlToMB4.php	0.00% <0.00%> (ø)	5.00% <0.00%> (?%)
...s/dav/appinfo/Migrations/Version20170116150538.php	0.00% <0.00%> (ø)	21.00% <0.00%> (?%)
lib/private/AvatarManager.php	100.00% <0.00%> (ø)	6.00% <0.00%> (?%)
... and 1164 more

---

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[phil-davis]

https://drone.owncloud.com/owncloud/core/26514/87/11

$ git init
Initialized empty Git repository in /tmp/owncloud/.git/
$ git remote add origin https://github.com/owncloud/core.git
$ git fetch --depth 1 --no-tags origin allow-acceptance-testing-against-fed-server-from-PR
From https://github.com/owncloud/core
 * branch              allow-acceptance-testing-against-fed-server-from-PR -> FETCH_HEAD
 * [new branch]        allow-acceptance-testing-against-fed-server-from-PR -> origin/allow-acceptance-testing-against-fed-server-from-PR
$ git checkout allow-acceptance-testing-against-fed-server-from-PR
Switched to a new branch 'allow-acceptance-testing-against-fed-server-from-PR'
Branch 'allow-acceptance-testing-against-fed-server-from-PR' set up to track remote branch 'allow-acceptance-testing-against-fed-server-from-PR' from 'origin'.
$ git submodule update --init
$ git log --format=oneline -n 1
f74d089b7107450f26994a2c5616aae3abd0e40d Allow federated server to be installed from git core branch

Looks good - it pulls the PR branch in then installs ownCloud in the federated server.