Drop pwgen/pwqgen requirements

Closes https://git.autonomic.zone/coop-cloud/abra/issues/167.

abra

@@ -652,6 +652,14 @@ checkout_main_or_master() {
   git checkout main > /dev/null 2>&1 || git checkout master > /dev/null 2>&1
 }
 
+pwgen_native() {
+  tr -dc 'a-zA-Z0-9' < /dev/urandom | head -c "$1"
+}
+
+pwqgen_native() {
+  shuf -n 3 /usr/share/dict/words | tr -dc 'a-zA-Z0-9' | tr -d '\n'
+}
+
 # FIXME 3wc: update or remove
 if [ -z "$ABRA_ENV" ] && [ -f .env ] && type direnv > /dev/null 2>&1 && ! direnv status | grep -q 'Found RC allowed true'; then
   error "direnv is blocked, run direnv allow"
@@ -1706,11 +1714,9 @@ sub_app_secret_generate(){
   fi
 
   if [[ -n "$length" ]]; then
-    require_binary pwgen
-    abra__cmd_="pwgen -s $length 1"
+    abra__cmd_="pwgen_native $length"
   else
-    require_binary pwqgen
-    abra__cmd_=pwqgen
+    abra__cmd_=pwqgen_native
   fi
 
   PWGEN=${abra__cmd_}
@@ -1720,7 +1726,7 @@ sub_app_secret_generate(){
     error "Required arguments missing"
   fi
 
-  PW=$($PWGEN|tr -d "\n")
+  PW=$($PWGEN)
 
   success "Password: $PW"