[tests-only] [full-ci] chore(ci): install the tput utility before running acceptance tests

[phil-davis]

Issue #41491

[phil-davis]

https://drone.owncloud.com/owncloud/core/40704/15/13
The tput utility is there, TERM is set to "xterm"
tput colors outputs "8"

But still there is:

runsh: Total 82 scenarios (82 passed, 0 failed)
runsh: Exit code of main run: 0
./tests/acceptance/run.sh: line 1377: tput setaf 2: command not found
runsh: There were no unexpected failures.
./tests/acceptance/run.sh: line 1385: tput setaf 2: command not found
runsh: There were no unexpected success.

Somehow tput setaf 2 is not working.

But it works for me locally in a terminal window:

export TERM=xterm
tput colors
8
tput setaf 2; echo "text"

"text" is displayed green.

I don't know what is going on in the drone environment.