check_drivesize: accept drive argument if drive+seperator string equals the argument

[inqrphl]

example drive=/boot and drive=/boot/ to arguments both work now, previously it was only /boot

[18:23:38.361][D][check_drivesize_other:125] Taking drive: '/boot' for path: '/boot/' since it just needs a separator: '/' at the end

checked windows as it has its own setCustomPath function. It is already accepting all forms of the drive argument, no need to make changes

• c
• C
• c:
• C:
• c:\
• C:\
• c:/
• C:/

[inqrphl]

Example:

Direct match with the drive, without separator

./snclient -vvv --logfile stdout run check_drivesize drive='/tmp'
...
OK - All 1 drive(s) are ok |'/tmp used'=464523264B;26737934336;30080176128;0;33422417920 '/tmp used %'=1.4%;80;90;0;100

Not a direct match, has an extra separator at the end

./snclient -vvv --logfile stdout run check_drivesize drive='/tmp/'
....
[16:21:02.764][D][check_drivesize_other:125] For search path: '/tmp/', taking drive: '/tmp' since adding a separator: '/' matches the search path: '/tmp/' 
...
OK - All 1 drive(s) are ok |'/tmp used'=464523264B;26737934336;30080176128;0;33422417920 '/tmp used %'=1.4%;80;90;0;100