Use psycopg2-binary rather than psycopg2

In addition, elimanate unnecessary dependency (development package for
PostgreSQL).

This helps to avoid issues on some new disctibutions like openSUSE 15.3
that misses the pg_config utility necessary to install psycopg2 from
sources (psycopg/psycopg2#1001). Probably
there will be some performance degradation, but it is not crucial for
our use cases.

klever/deploys/conf/debian-packages.txt

@@ -1 +1 @@
-bc bison cmake flex gettext git graphviz libc6-dev-i386 libelf-dev libpq-dev libssl-dev make nginx postgresql python3-dev python3-pip rabbitmq-server unzip
+bc bison cmake flex gettext git graphviz libc6-dev-i386 libelf-dev libssl-dev make nginx postgresql python3-dev python3-pip rabbitmq-server unzip

klever/deploys/conf/fedora-packages.txt

@@ -1 +1 @@
-bc bison cmake elfutils-libelf-devel flex gettext git glibc-devel.i686 graphviz libpq-devel make nginx openssl-devel postgresql postgresql-server python3-devel python3-pip rabbitmq-server unzip
+bc bison cmake elfutils-libelf-devel flex gettext git glibc-devel.i686 graphviz make nginx openssl-devel postgresql postgresql-server python3-devel python3-pip rabbitmq-server unzip

klever/deploys/conf/opensuse-packages.txt

@@ -1 +1 @@
-bc bison cmake flex gettext-runtime git graphviz glibc-devel libelf-devel openssl-devel make nginx postgresql12-server postgresql12-server-devel python3-devel python3-pip rabbitmq-server unzip gcc gcc-c++
+bc bison cmake flex gettext-runtime git graphviz glibc-devel libelf-devel openssl-devel make nginx postgresql12-server python3-devel python3-pip rabbitmq-server unzip gcc gcc-c++

requirements-openstack.txt

@@ -64,7 +64,7 @@ pika==1.1.0
 ply==3.11
 prettytable==0.7.2
 prompt-toolkit==3.0.8
-psycopg2==2.8.6
+psycopg2-binary==2.8.6
 pycparser==2.20
 pycryptodome==3.9.9
 Pygments==2.7.3

requirements.txt

@@ -29,7 +29,7 @@ MarkupSafe==1.1.1
 pika==1.1.0
 ply==3.11
 prompt-toolkit==3.0.8
-psycopg2==2.8.6
+psycopg2-binary==2.8.6
 Pygments==2.7.3
 python-slugify==4.0.1
 pytz==2020.4

setup.py

@@ -82,7 +82,7 @@ def package_files(package_directory):
         "Django==3.0.6",
         "BenchExec==3.3",
         "clade>=3.4,<3.5",
-        "psycopg2",
+        "psycopg2-binary",
         "graphviz",
         "celery",
         "django_celery_results",