obs/fluent-bit: rename dep--fluent-bit to fluent-bit

dep--fluent-bit was just a development package with less dependencies

obs/dep--fluent-bit/env.sh → obs/fluent-bit/env.sh

-export SOFTWARE_NAME=dep--fluent-bit
-export MAINTAINER_NAME=Ophelie
+# packahge containing fluent-bit
+
+export SOFTWARE_NAME=fluent-bit
+export MAINTAINER_NAME="Ophélie Gagnard"
 export MAINTAINER_EMAIL=ophelie.gagnard@nexedi.com
 export PACKAGE_BUILD_DEPENDENCIES="debhelper (>= 4.1.16), chrpath, wget, python (>= 2.7), python3 (>= 3.7), python3-dev (>= 3.7), cmake (>= 3.18)"
 export SETUPTOOLS_VERSION=44.1.1