scripts: bash completion included in deb/rpm packages

Fixes #2181

scripts/build_posix.sh

@@ -17,6 +17,7 @@ BUILD_DIR=build
 BIN_DIR=$BUILD_DIR/$INSTALL_DIR/bin
 DESC='Data Version Control - datasets, models, and experiments versioning for ML or data science projects'
 LIB_DIR=$BUILD_DIR/$INSTALL_DIR/lib
+CMPLT_DIR=etc/bash_completion.d
 
 print_error()
 {
@@ -51,6 +52,7 @@ fpm_build()
 	    $FPM_FLAGS \
 	    -n dvc \
 	    -v $VERSION \
+	    --config-files $CMPLT_DIR/dvc \
 	    -C $BUILD_DIR usr
 }
 
@@ -58,6 +60,7 @@ cleanup()
 {
 	print_info "Cleaning up..."
 	rm -rf build
+	rm -rf $CMPLT_DIR
 }
 
 install_dependencies()
@@ -106,6 +109,11 @@ build_dvc()
 		popd
 		$BIN_DIR/dvc --help
 	fi
+
+	if [[ "$(uname)" == 'Linux' ]]; then
+		mkdir -p $CMPLT_DIR
+		cp scripts/completion/dvc.bash $CMPLT_DIR/dvc
+	fi
 }
 
 cleanup