aws-iot-sdk: minor fixes

* Create the certificates directory before copying files into it.
* Give the downloaded tarball a meaningful name (otherwise tarballs
  downloaded from GitHub don't have a proper name (only the version) and
  may collide with other packages with the same version.
* Allow to create certs package if certs are available at build time.

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-dey/recipes-aws/awsiotsdk-c/awsiotsdk-c_2.1.1.bb

@@ -9,7 +9,7 @@ LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=acc7a1bf87c055789657b148939e4b40"
 DEPENDS = "mbedtls"
 
 SRC_URI = " \
-    https://github.com/aws/aws-iot-device-sdk-embedded-C/archive/v${PV}.tar.gz \
+    https://github.com/aws/aws-iot-device-sdk-embedded-C/archive/v${PV}.tar.gz;downloadfilename=${BP}.tar.gz \
     file://aws_iot_config.h.template \
     file://awsiotsdk.pc \
     file://Makefile \
@@ -58,11 +58,16 @@ do_install() {
 	if [ -f "${AWS_IOT_CERTS_DIR}/${AWS_IOT_ROOT_CA_FILENAME}" ] && \
 	   [ -f "${AWS_IOT_CERTS_DIR}/${AWS_IOT_CERTIFICATE_FILENAME}" ] && \
 	   [ -f "${AWS_IOT_CERTS_DIR}/${AWS_IOT_PRIVATE_KEY_FILENAME}" ]; then
+		install -d ${D}${sysconfdir}/ssl/certs
 		install -m 0644 "${AWS_IOT_CERTS_DIR}/${AWS_IOT_ROOT_CA_FILENAME}" ${D}${sysconfdir}/ssl/certs/
 		install -m 0644 "${AWS_IOT_CERTS_DIR}/${AWS_IOT_CERTIFICATE_FILENAME}" ${D}${sysconfdir}/ssl/certs/
 		install -m 0644 "${AWS_IOT_CERTS_DIR}/${AWS_IOT_PRIVATE_KEY_FILENAME}" ${D}${sysconfdir}/ssl/certs/
 	fi
 }
 
+PACKAGES =+ "${PN}-cert"
+
+FILES_${PN}-cert = "${sysconfdir}/ssl/certs/"
+
 ALLOW_EMPTY_${PN} = "1"
 

meta-digi-dey/recipes-digi/dey-examples/awsiotsdk-demo_git.bb

@@ -45,5 +45,7 @@ do_install() {
 	oe_runmake DESTDIR=${D} install
 }
 
+RRECOMMENDS_${PN} += "awsiotsdk-c-cert"
+
 PACKAGE_ARCH = "${MACHINE_ARCH}"