device/raspistill/imp_testing.go: test images not loading properly when using raspistill beyond revid_test.go

filepath.Abs() does not reflect file structure from where this function is called but rather where the executable is located therefore, its usage in raspistill to load images does not always work. A better solution might to get the environment variable GOPATH and then append “bitbucket.org/ausocean/test/test-data/av/input/jpeg” to get test images.