Merge pull request #214 from drexin/wip-fix-centos8

Rename PowerTools to powertools in centos8 files

Author: shahmishal

5.2/centos/8/Dockerfile

@@ -4,7 +4,7 @@ LABEL description="Docker Container for the Swift programming language"
 
 RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 
-RUN yum install --enablerepo=PowerTools -y \
+RUN yum install --enablerepo=powertools -y \
   binutils \
   gcc \
   git \

5.3/centos/8/Dockerfile

@@ -4,7 +4,7 @@ LABEL description="Docker Container for the Swift programming language"
 
 RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 
-RUN yum install --enablerepo=PowerTools -y \
+RUN yum install --enablerepo=powertools -y \
   binutils \
   gcc \
   git \

nightly-5.3/centos/8/Dockerfile

@@ -4,7 +4,7 @@ LABEL description="Docker Container for the Swift programming language"
 
 RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 
-RUN yum install --enablerepo=PowerTools -y \
+RUN yum install --enablerepo=powertools -y \
   binutils \
   gcc \
   git \

nightly-main/centos/8/Dockerfile

@@ -4,7 +4,7 @@ LABEL description="Docker Container for the Swift programming language"
 
 RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 
-RUN yum install --enablerepo=PowerTools -y \
+RUN yum install --enablerepo=powertools -y \
   binutils \
   gcc \
   git \

swift-ci/master/centos/8/Dockerfile

@@ -5,7 +5,7 @@ RUN groupadd -g 42 build-user && \
 
 RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 
-RUN yum install --enablerepo=PowerTools -y \
+RUN yum install --enablerepo=powertools -y \
     autoconf              \
     clang                 \
     cmake                 \