Bug 1959136

Description of problem:
During deployment of a virt-who config, if the password contains a backtick, the script and 'hammer virt-who-config deploy ...' fail.  
The failure is due to using backticks in the code for command substitution and the backtick in the password is conflicting.  


Version-Release number of selected component (if applicable):
virt-who.noarch  0.28.10-1.el7_9

How reproducible:
Always


Steps to Reproduce:
1. Infrastructure > Virt-who Configurations > Create Config
2. Fill out the fields as required.  For the Hypervisor Password field use text with a backtick. e.g. my`password.
3. Click submit
4. Click the Deploy tab to copy the hammer command or the Configuration script. 
5. Run either the hammer command or configuration script.

Actual results:
When using the hammer command:
/tmp/virt_who20210507-1272-1n4wcfx: line 102: unexpected EOF while looking for matching `''
/tmp/virt_who20210507-1272-1n4wcfx: line 108: syntax error: unexpected end of file

When using the script:
./myvirtwho: line 55: unexpected EOF while looking for matching ``'
./myvirtwho: line 108: syntax error: unexpected end of file



Expected results:
== Finished ==
Finished successfully




Additional info:
Workaround. Use the script method instead of the 'hammer virt-who-config deploy ...' method.  In the script: replace the backticks used for command substitution with $(). 
53 #  cr_password=`virt-who-password --password 'virt`who' 2> /dev/null`
54   cr_password=$(virt-who-password --password 'virt`who' 2> /dev/null)