Including of 'postgres' in 'sudo' group is not required.

A problem was detected in container with Ubuntu 24.04

tests works with "/usr/bin/pg_config" but real pg_config is "/usr/lib/postgresql/17/bin/pg_config"

To resovle this problem we will call "pg_config --bindir" and use it result for BINDIR and PG_CONFIG.

… into D20250226_001--ci_and_ssh

Let's use /pg/testgres/run_tests.sh directly.

curl is installing twice.

…6_001--ci_and_ssh

…6_001--ci_and_ssh

[del] musl-dev
[del] mc

/pg/testgres/run_tests.sh is used directly.

- We do multiple attempts to read pid file.
- We process a case when we see that node is stopped between test and read.
- We process a case when pid-file is empty.

Assert is added.

…0250226_001--ci_and_ssh

- New parameters "ignore_errors" is added. Default value is False.
- Asserts are added.

…de-pid

…0250226_001--ci_and_ssh

This method returns nothing (None).

…0250226_001--ci_and_ssh

When we define a template we have to use "-t" option. It forces mktemp to return a path instead name.

The following methods of RemoteOperations are fixed:
 - mkdtemp
 - mkstemp

…to D20250226_001--ci_and_ssh

…0250226_001--ci_and_ssh

Main
 - We check only an exit code to detect an error.
 - If someone utility returns a result through an exit code, a caller side should set ignore_errors=true and process this case itself.
 - If expect_error is true and no errors occurred, we raise an InvalidOperationException.

…d' into D20250226_001--ci_and_ssh

The folder "home/postgres" is not required now.

Let's rollback the new code to avoid problems with probackup2' tests.

…d' into D20250226_001--ci_and_ssh

Let's test a real pg_config.

…' into D20250226_001--ci_and_ssh

- these tests configure logging wrong and create the conflicts with root logger
- these tests (local and remote) conflict with each other

…o D20250226_001--ci_and_ssh