Add support for double-quoted strings in wrapper.sh

[RainbowRivey]

Currently all double-quotes disappear when using wrapper script.
This is important for passing complex arguments (e.g. lists to Hydra configs)

For example:

pegasus-bridle/wrapper.sh echo "test"

Outputs

[...]
execute: echo test
test

Output with new feature should be:

[...]
execute: echo "test"
test

Note
There IS actually a workaround right now, putting escaped quotes will do the thing, but its quite inconvenient:

pegasus-bridle/wrapper.sh echo "\"test\""