libparam arguments that have equals sign (=) ar not properly handed by kraft run

[razvand]

Describe the bug

When aiming to pass library arguments that contain the equals sign (=) an error is thrown by KraftKit at kraft run stage:

$ kraft run --log-level debug --log-type basic --rm -p 6379:6379 -a "env.vars=[ x=b ]" unikraft.org/redis:7.2 -M 512M
[...]
 E  expected param to be in the format 'libname.param=value' but got: 'env.vars=[ x=b ]'
[...]

Replacing the equals sign with something else works:

$ kraft run --log-level debug --log-type basic --rm -p 6379:6379 -a "env.vars=[ x:b ]" unikraft.org/redis:7.2 -M 512M
[...]
qemu-system-x86_64 -append env.vars=[ x:b ] -- /usr/bin/redis-server /etc/redis/redis.conf ...
[...]

Note that directly invoking qemu-system-x86_64 works, so the issue is with Kraft:

qemu-system-x86_64 -append "env.vars=[ x:b ] -- /usr/bin/redis-server /etc/redis/redis.conf" -kernel 7.2/.unikraft/build/redis_qemu-x86_64 -nographic -cpu max -m 512

qemu-system-x86_64 -append "env.vars=[ x=b ] -- /usr/bin/redis-server /etc/redis/redis.conf" -kernel 7.2/.unikraft/build/redis_qemu-x86_64 -nographic -cpu max -m 512

Steps to reproduce

Use the kraft run command above:

kraft run --log-level debug --log-type basic --rm -p 6379:6379 -a "env.vars=[ x=b ]" unikraft.org/redis:7.2 -M 512M

Expected behavior

The kernel should start with the proper argument passed.

Which architectures were you using or does this bug affect?

x86_64

Which operating system were you using or does this bug affect?

No response

Relevant log output

D  using platform=qemu                                                                                                
 D  determining how to proceed given provided input and context
 D  using compatible context candidate=oci                                                                             
 D  querying catalog arch=x86_64 local=true name=unikraft.org/redis:7.2 plat=qemu remote=false types=[app]
 i  found unikraft.org/redis:7.2 (qemu/x86_64) (5b227be, c5ebda4, qemu/x86_64, 25 MB)                                  
 D  found 1/1 matching packages in oci catalog             
 i  using arch=x86_64 plat=qemu                                                                                        
 D  qemu-system-x86_64 -version                                                                                        
 D  qemu-system-x86_64 -accel help                         
 E  expected param to be in the format 'libname.param=value' but got: 'env.vars=[ x=b ]'

[craciunoiuc]

Fixed by 692b470