FOGL-3511

[ashish-jabble]

Fixed items

• [x] south-phidget references are removed from system tests
• [x] foglamp-sqlite-pkg package download from dianomic org in requirements.sh for RPM based platforms build
• [x] filter-rms-trigger references are removed from system tests
• [x] filter-simple-python references are removed from system tests
• [x] filter-ema references are removed from system tests

Note - @MarkRiddoch What is the plan for the backup of deleted system tests? May be in plugin repo itself under path like {Repo_Name}/tests/system/...