cli: ipsec: Avoid string truncation warning
cli: ipsec: Avoid string truncation warning

Check string length before copying to sat or spt name, in order to
avoid stringop-truncation warning. Since we explicitly check the
length, we actually don't need strncpy() anymore and can just use
strcpy().

Signed-off-by: Jere Leppänen <14957520de8d9815e0c353a07fe23c737f0171e9@nokia.com>
Reviewed-by: Matias Elo <62402263e8617147f0e4dd5b7f6f8ec67f2b3d2c@nokia.com>

OpenFastPath/ofp,OpenFastPath/ofp,OpenFastPath/ofp,OpenFastPath/ofp