Fix nasa#148, DS App strcpy does not check bound.

[elizabash]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov. (This issue was discussed in a cfs meeting. I think that counts!)

Describe the contribution
Static analyzer via CodeSonar found a usage of 'strcpy' the DS App. Strcpy() does not check bounds and should be replaced with something that does like strncpy(). strncpy(dest, src, sizeof(dest));
Fixes #148

Testing performed

1. make distclean
2. make native_std.prep
3. make native_std.install
4. Note: I still can't log into CodeSonar to check the static analysis results. It would be great if a reviewer could check what CodeSonar has to say.