Use automatic dependency generation for RPM builds. (#9937)

Our current RPM spec file includes _all_ of our library dependencies as
statically listed `Requires:` lines. This, in turn, requires a very
large number of conditionals in the dependencies to account for package
naming differences between RPM distros, and also makes it a pain in the
arse to port the spec file to work with new releases of existing
distros.

This changes the spec file to just use the automatic `Requires:`
generation functionality that's already included in the RPM build
process. The net effect is that the spec file ends up much cleaner, and
it works just about anywhere with minimal modification., as well as us
not having to track anything but build dependencies manually.

netdata.spec.in

@@ -5,6 +5,11 @@
 #TODO: Temporary fix for the build-id error during go.d plugin set up
 %global _missing_build_ids_terminate_build 0
 
+# XXX: We are using automatic `Requires:` generation for libraries
+# whenever possible, DO NOT LIST LIBRARY DEPENDENCIES UNLESS THE RESULTANT
+# PACKAGE IS BROKEN WITHOUT THEM.
+AutoReqProv: yes
+
 %if "@HAVE_LIBBPF@" == "1"
 %global have_bpf 1
 %else
@@ -148,31 +153,10 @@ BuildRequires: json-c-devel
 # Runtime dependencies
 #
 Requires:      python
-Requires:      zlib
-%if 0%{?suse_version}
-# for libuv, Requires version >= 1
-Requires:      libuv1
-Requires:      libJudy1
-Requires:      libjson-c4
-Requires:      libuuid1
-%else
-# for libuv, Requires version >= 1
-Requires:      libuv >= 1
-Requires:      Judy
-Requires:      json-c
-Requires:      libuuid
-%endif
-Requires:      openssl
-Requires:      lz4
 
 # Core requirements for the install to succeed
 Requires(pre): /usr/sbin/groupadd
 Requires(pre): /usr/sbin/useradd
-%if 0%{?suse_version} >= 1140
-Requires(post): libcap1
-%else
-Requires(post): libcap
-%endif
 
 %{netdata_initd_requires}
 
@@ -188,19 +172,6 @@ BuildRequires:  libmnl-devel
 BuildRequires:  libnetfilter_acct-devel
 %endif
 
-%if 0%{?suse_version}
-Requires: libmnl0
-%else
-Requires: libmnl
-%endif
-
-%if 0%{?fedora}
-Requires: libnetfilter_acct
-%else
-%if 0%{?suse_version} >= 1140
-Requires: libnetfilter_acct1
-%endif
-%endif
 # end nfacct plugin dependencies
 
 # freeipmi plugin dependencies
@@ -221,16 +192,6 @@ BuildRequires: libprotobuf-c-devel
 %else
 BuildRequires: protobuf-c-devel
 %endif
-
-%if 0%{?suse_version}
-Requires: libsnappy1
-Requires: protobuf-c
-Requires: libprotobuf15
-%else
-Requires: snappy
-Requires: protobuf-c
-Requires: protobuf
-%endif
 # end - prometheus remote write dependencies
 
 # #####################################################################
@@ -559,6 +520,8 @@ are sensor monitoring, system event monitoring, power control, and serial-over-L
 %attr(4750,root,netdata) %{_libexecdir}/%{name}/plugins.d/freeipmi.plugin
 
 %changelog
+* Wed Sep 16 2020 Austin Hemmelgarn <austin@netdata.cloud> 0.0.0-14
+- Convert to using 'AutoReq: yes' for library dependencies.
 * Thu Feb 13 2020 Austin Hemmelgarn <austin@netdata.cloud> 0.0.0-13
 - Add handling for custom libmosquitto fork
 * Wed Jan 01 2020 Austin Hemmelgarn <austin@netdata.cloud> 0.0.0-12