fix sros qcow regex pattern

[egr3s]

Make qcow pattern match the end of string. Otherwise it may pick up "license" file instead of actual image file.

Proofs. Build and run the image with the upstream script:

$ docker run -it  --privileged --name ixr23-10   vrnetlab/nokia_vsr:23.10.R2
chmod: cannot access '/tftpboot': No such file or directory
2024-10-10 04:35:39,114: launch     DEBUG    acting flags: username 'vrnetlab', password 'VR-netlab9', connection-mode 'vrxcon', variant 'sr-1'
2024-10-10 04:35:39,114: launch     DEBUG    Environment variables: environ({'PATH': '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin', 'HOSTNAME': 'cb388c2301bf', 'TERM': 'xterm', 'HOME': '/root', 'LC_CTYPE': 'C.UTF-8'})
2024-10-10 04:35:39,115: launch     INFO     Parsed SR OS version: SROSVersion(magc=False, version='23.10.R2', major=23, minor=10, patch='2')
2024-10-10 04:35:39,117: launch     ERROR    License is missing! Provide a license file with a sros-vsr-23.10.R2.qcow2.license.license name next to the qcow2 image.

It says Provide a license file with a sros-vsr-23.10.R2.qcow2.license.license, which indicates that it took a license file instead of a qcow image.

If I exec into a container, I see that the license is there. But when launch.py is run, it rewrites the license file into a sros.qcow2, and the real image is left intact.

$ docker run -it  --privileged --name ixr23-10 --entrypoint=/bin/bash  vrnetlab/nokia_vsr:23.10.R2
root@4eef932b64ad:/# ls -la sros*
-rw-r--r-- 1 root root 476053504 Oct  8 05:36 sros-vsr-23.10.R2.qcow2
-rw-r--r-- 1 root root       943 Oct  8 05:36 sros-vsr-23.10.R2.qcow2.license

root@4eef932b64ad:/# ./launch.py 
chmod: cannot access '/tftpboot': No such file or directory
2024-10-10 04:36:20,039: launch     DEBUG    acting flags: username 'vrnetlab', password 'VR-netlab9', connection-mode 'vrxcon', variant 'sr-1'
2024-10-10 04:36:20,040: launch     DEBUG    Environment variables: environ({'HOSTNAME': '4eef932b64ad', 'PWD': '/', 'HOME': '/root', 'TERM': 'xterm', 'SHLVL': '1', 'PATH': '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin', '_': './launch.py', 'LC_CTYPE': 'C.UTF-8'})
2024-10-10 04:36:20,041: launch     INFO     Parsed SR OS version: SROSVersion(magc=False, version='23.10.R2', major=23, minor=10, patch='2')
2024-10-10 04:36:20,044: launch     ERROR    License is missing! Provide a license file with a sros-vsr-23.10.R2.qcow2.license.license name next to the qcow2 image.
root@4eef932b64ad:/# ls -la tftpboot
total 8
drwxr-xr-x 2 root root 4096 Oct 10 04:36 .
drwxr-xr-x 1 root root 4096 Oct 10 04:36 ..
root@4eef932b64ad:/# ls -la sros*
-rw-r--r-- 1 root root 476053504 Oct  8 05:36 sros-vsr-23.10.R2.qcow2
-rw-r--r-- 1 root root       943 Oct  8 05:36 sros.qcow2
root@4eef932b64ad:/# exit
exit

[egr3s]

@hellt please review

[hellt]

lgtm. thanks @egr3s