ci: update centos7 and centos8 build

Author: ethomson

.github/workflows/nightly.yml

@@ -112,6 +112,7 @@ jobs:
             name: centos7
           env:
             CMAKE_OPTIONS: -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON
+            BUILD_PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
           os: ubuntu-latest
         - # CentOS 8
           container:

ci/docker/centos8

@@ -12,7 +12,9 @@ RUN yum install -y \
 	git-daemon \
 	java-1.8.0-openjdk-headless \
 	sudo \
-	python39
+	python39 \
+	krb5-workstation \
+	krb5-libs
 
 FROM yum AS libssh2
 RUN cd /tmp && \