redhat/configs: Make merge.py portable for older python

DESCRIPTION

Since the operand := was only introduced on python-38, the merge.py script breaks when make rh-configs is run on systems with older python versions

TESTING

A few errors as the following are observed:

cd .../kernel-ark/redhat/configs; ./build_configs.sh "partial" "snip"
Building .../kernel-ark/redhat/configs/partial-kgcov-snip.config ... 
  File "./merge.py", line 35
    if m := isset.match(line):
          ^
SyntaxError: invalid syntax
Failed to merge config-common-kgcov

Signed-off-by: Desnes Nunes desnesn@redhat.com

added CKIMissing label

added DependenciesOK label

added CKIRunning label and removed CKIMissing label

added AcksNeedsReview label

ACK/NACK Summary: OK

Approved by:

• Clark Williams (clrkwllms)

Merge Request has all necessary Approvals.

Last updated at 2023-02-09T20:55:08.

added CKIOK label and removed CKIRunning label

approved this merge request

added AcksOK readyForMerge labels and removed AcksNeedsReview label

That's what I get for reading Python Distilled

Looks good to me

requested review from @clrkwllms

merged

mentioned in commit ea934c86