Add missing CI for extensions

[nikic]

The following extensions currently do not have CI testing or only incomplete testing. These should be tested on Azure Pipelines Linux x64 configuration if possible.

• oci8
  • Build (Build OCI8 and PDO OCI on azure php-src#6604)
  • Test
• pdo_dblib
  • Build (Add MSSQL setup to Azure Pipelines build php-src#6569)
  • Test (Add MSSQL setup to Azure Pipelines build php-src#6569)
• pdo_firebird
  • Build (Build PDO dblib and PDO firebird on Azure php-src#6529)
  • Test (Enable pdo-firebird Testing in Linux CI Environments php-src#12677)
• pdo_oci
  • Build (Build OCI8 and PDO OCI on azure php-src#6604)
  • Test

These extensions are fully tested on Windows (AppVeyor). Having additional testing on Linux would be valuable, but is not critical:

• odbc
  • Build (using unixodbc)
  • Test (Add more test coverage for ext/ODBC php-src#11938)
• pdo_odbc
  • Build (Build PDO odbc on azure php-src#6528)
  • Test

[cmb69]

FWIW, ext/odbc and ext/pdo_odbc are built and tested on AppVeyor against MS SQLServer. Testing against other databases would certainly be highly desireable, but likely many tests would fail (I ran the tests against MySQL, and roughly half of them failed).

[nikic]

@cmb69 Thanks for the information, I was not aware that there are tested on AppVeyor. Having these tested on Linux and other DBs would be good, but it's reassuring that at least we have them somewhere...

[nikic]

I've added builds for PDO ODBC and PDO Firebird. PDO DBlib is also easy to build, but each test waits for a ~10s timeout, so we'd have to actually set up the server side for that to be feasible.

[nikic]

PDO DBLib build & test has been added in php/php-src#6569.

[nikic]

OCI and PDO OCI build has been added in php/php-src#6604.

[kocsismate]

ext/odbc and ext/pdo_odbc tests are enabled on LInux, test coverage is significantly improved: php/php-src#11938

[SakiTakamachi]

pdo_oci has been decided to be unbundled, and tests for pdo_firebird have been added through the following pull request.

php/php-src#12677

Therefore, this task may be considered complete.