Add python-pip as package dependency for archlinux (#7041)

util/linux_install.sh

@@ -77,6 +77,7 @@ elif grep ID /etc/os-release | grep -q 'arch\|manjaro'; then
 		gcc \
 		git \
 		python \
+		python-pip \
 		unzip \
 		wget \
 		zip
@@ -213,4 +214,4 @@ else
 fi
 
 # Global install tasks
-pip3 install -r ${util_dir}/../requirements.txt
+pip3 install --user -r ${util_dir}/../requirements.txt